In our government, the legislative branch holds the power of the purse, which means Congress is responsible for passing legislation to fund the government. From funding our national defense to investing in job training and public infrastructure to maintaining government operations, Congress decides how to appropriate taxpayer dollars each fiscal year.
However, if Congress fails to pass legislation to fund the government before a new fiscal year begins, they can pass legislation to keep federal operations going at the current spending levels. That legislation is called a Continuing Resolution (CR).