The United States has a mixed history with infrastructure. In 1956, Congress passed the Federal Aid Highway Act, which created the Interstate Highway System, arguably one of America's greatest innovations. This allowed cheaper shipping and inexpensive travel, as well as the implementation of surburbanization, resulting in cheaper housing, and increased tourism. However, in recent years, the United States has been falling behind. In 2021, the American Society of Civil Engineers gave the United States a C- in their Report Card for America's Infrastructure, concluding that 43% of public roadways are in "poor or mediocre condition". For a country depicted as the land of opportunity and promise, this is quite embarrassing.