How the US built the Interstate Highway system

As late as World War II, it took a well-prepared motorist roughly 10 days to cross America from coast to coast in a car. That all changed when the nation undertook its biggest public infrastructure project in 1956, the National Interstate and Defense Highways Act, initiating a 36-year, $114B mission to lay 41,000 miles of roads across America. Watch a smart overview here.

Future President Dwight D. Eisenhower's terrible experience on a cross-country road trip in 1919 helped inspire him to create the interstate highway system.

The federal government sent roughly $1.1T to state and local governments in 2024

Federal grants support a large portion of state and local budgets, funding Medicaid, infrastructure, education, and housing. In FY 2024, these transfers made up about 16% of total federal spending.

The 2021 infrastructure law increased transit spending 42%, but may not have produced more transit

The infrastructure bill committed $108B to transit, the largest investment in history. However, three years in, real inflation-adjusted investment has declined. An 84% increase in non-highway spending coincided with a potential 29% decrease in actual structures, most likely due to construction inflation and bureaucratic delays.

The Federal Transit Administration distributes roughly $20B annually to support local transportation

Created by the Urban Mass Transportation Act in 1964, the FTA funds and oversees the roughly 2,200 transit systems that receive federal support across the US, covering everything from subway capital investment to rural bus service.

Use this calculator to find out the programs and services your federal income taxes fund.

.

The 1950s saw the rise of the modern American road trip

In 2020, government entities spent $316.5B on infrastructure, with state and local governments accounting for 34.8% of that amount.

Nearly half of the discretionary funding in the US is allocated to national defense.

The National Park Service responded to the postwar influx of visitors with a massive project

The American Society of Civil Engineers' infrastructure report card gave the US a C in 2025, its highest grade since the project launched in 1998.

The Budget and Accounting Act of 1921 created the modern federal budget

Before 1921, federal funding was fragmented and ad hoc. This article traces how inefficiency and postwar pressures led Congress to pass the Budget and Accounting Act, creating a standardized, centralized federal budgeting process.

Hollywood helped fund American military activity by boosting bond sales

To help fund its WWI military activity, the US introduced Liberty Bonds—government-issued debt marketed directly to the public. Starting at $50, the campaign targeted working Americans and offered Thrift Stamps to make bond-buying more accessible. Hollywood led the charge, with stars like Charlie Chaplin and Mary Pickford boosting bond sales.

Learn about how highways are designed and the geometry behind what makes them safe and efficient.

An analysis of the National Science Foundation's historical budget and spending

The NSF accounted for 0.1% of all federal spending in FY2024, with $9.39B—just over twice its FY1991 spending—out of $6.78T overall. Almost 99% of these funds ($9.29B) went to general science and basic research, with the rest allocated to national defense.

The first federal student loan program began in 1958

As the Cold War heated up, federal officials recognized the need to provide financial aid to students pursuing degrees in areas critical to national security, like science, math, and engineering. These programs evolved to broadly support the general population, both increasing access to college while acting as a driver of increased costs. This six-part series takes a deep dive into the history of federal student aid.

See which states contribute the most and least to the federal government.

Bills passed during the Civil War shaped postwar America

Despite the war with the South, Congress passed transformative laws like the Homestead Act and the Morrill Land-Grant College Act, which encouraged westward settlement and expanded higher education.

The federal government pumped $70 billion into transit amidst reduced ridership during the COVID pandemic

When ridership collapsed by 75% in the spring of 2020, Congress sent transit agencies nearly $70B to help them survive. But that money has largely run out, and ridership remains 14-28% below prepandemic levels, leaving many transit systems with large budget deficits.

The National Housing Act established the Federal Housing Administration

During the Great Depression, 1,000 homes were foreclosed on per day, and half of the mortgages across the country defaulted. To address this crisis, President Franklin D. Roosevelt signed the National Housing Act. It established the Federal Housing Administration, which is still around today and helps protect lenders and buyers.

Federal spending falls into 2 categories: mandatory and discretionary

Federal spending is split between mandatory programs, funded automatically by law, and discretionary programs, funded through annual appropriations. This video breaks down which major programs fall into each category and why the distinction matters.

New Deal programs still shape mandatory federal spending today

Many of the largest items in today's federal budget—especially mandatory programs—trace their origins to Franklin D. Roosevelt's New Deal. This podcast explores how those policies reshaped federal spending and government responsibility.

The Erie Canal was built without a single dollar of federal funding

After President Madison and Congress rejected the project, New York State financed the 363-mile Erie Canal entirely on its own—authorizing $7M in bonds in 1817.

Engineering the Overseas Highway connecting the Florida Keys

A 113-mile series of bridges called the Overseas Highway connects Key West—the southernmost point of the United States—to mainland Florida. The route originally served as a railroad but has required regular reconstruction due to major storms. This video traces the history of the project in fascinating detail.

See how local, state, and federal governments divide the cost of public services

Federal, state, and local governments share responsibility for funding public services. Education, roads, and social programs are funded through a complicated mix of taxes and intergovernmental transfers.

Transit is funded through a three-tier system, and the federal government is the smallest piece

In 2019, the federal government covered about one-sixth of the $79B spent on public transit. States and localities make up the rest. About 85% of all transit trips are taken by bus or heavy rail, and nearly 4 in 10 US transit trips occur in the New York City metro area.

Visualize government spending with USAFacts to see complex federal budget data as clear charts and summaries, and explore where the money goes as well as how revenue, deficits, and debt change over time.

The 2025 budget bill significantly increased ICE's budget and role in federal law enforcement

The 2025 'Big Beautiful Bill' allocated $170B to immigration and border enforcement for use through 2029. ICE's nearly $100B share includes substantial increases in detention capacity and operational scope. The increased funding will make ICE the most heavily funded federal law enforcement agency.

The federal government has spent more money annually than it has collected every year since 2022.

Travel the 363-mile Erie Canal, the waterway that cut freight costs by 90% and opened the American frontier.

The Elementary and Secondary Education Act of 1965 provided federal aid to tackle inequity in public schools

Signed into law April 11, 1965, ESEA authorized over $1B in grants during its first year—boosting Title I programs which now provide $18.4B annually to support low-income students.

How student loans became incredibly prevalent

As of 2024, the total outstanding federal student loan debt sat at $1.6T, held by almost 43 million borrowers. Explore the history of student loans and how they became prevalent in the US, as told by several influential actors in the creation of the program over the years.

The Federal Emergency Management Agency leads the US response to disasters

Established in 1979, FEMA coordinates the government's response to hurricanes, wildfires, floods, and other disasters, providing funding, logistical support, and recovery assistance. In FY 2024, the agency spent $35.1B, nearly 40% of the Department of Homeland Security's total budget.

The Ford Foundation helped expand America’s regional theater

In 1961, the philanthropic arm of Henry Ford’s massive empire seeded an initial grant of $9M to fund regional theaters around the United States. This was done to replicate the repertory theaters throughout Europe.

The US has carried debt since 1791

After the Revolutionary War, the US owed $75M to nations like France. Debt builds when spending exceeds revenue, funding programs, wars, and economic recovery efforts. Most debt is domestic, like Social Security bonds, with foreign nations also holding a share.

Over a century ago, fewer than 1% of Americans paid income taxes—but the cost of World War II prompted the federal government to greatly expand the number of people required to pay income taxes.

The federal government distributes more than $160M in grants directly to libraries each year

The Institute of Museum and Library Services distributes funds annually to State Library Administrative Agencies, which support statewide initiatives and channel funds to public and academic libraries.

Tax policy can have a direct impact on the national debt, with past presidents' changes to tax codes inflating the deficit.