Every time you fill your car with gas, a portion of what you pay at the pump goes to a federal program called the Highway Trust Fund.

Soon Congress will consider the fund’s financial future — and there are big implications for transportation spending hanging in the balance.

Since 2008, the Highway Trust Fund has spent more than it takes in, requiring Congress to make up the difference.

Will lawmakers allow this program to spend more than it collects yet again? Or will they reevaluate the federal government’s role in transportation spending?

Learn more about the Highway Trust Fund in the video above.