U.S. Senate Republicans passed President Donald Trump's massive tax-and-spending bill on Tuesday by the narrowest of margins, advancing a package that would slash taxes, reduce social safety net programs and boost military and immigration enforcement spending while adding $3.

The Senate also pulled out a change to the Pell Grant program, which provides federal aid to low-income students to attend colleges and universities. Right now, students are considered full time and qualify for the maximum amount of aid if they take 12 credits a semester.