The U.S. Student Association honored Senator Collins for her work to increase funding for ____

Your answer, "Pell Grants," is correct.

Having visited more than 160 schools, Senator Collins has an extraordinary record of support for education. In appreciation of Maine's dedicated teachers, she authored the law providing a tax break for teachers who buy supplies for their classrooms. To help students in Maine's rural communities, she wrote a law that has brought $10.5 million to Maine's small rural schools during the past five years. And the U.S. Student Association honored Senator Collins for her work to increase funding for Pell Grants, which help low-income students afford college.

Bold italics are quotes from campaign literature.