Earlier versions of the bill faced stiff opposition from Democrats and moderate Republicans.
Swarthout said he is optimistic that the bill will be defeated now that members of Congress have had time to fully consider the bill's negative impact on students.
"We have an uphill fight," said Tony Pals, director of public information for the National Association of Independent Colleges and Universities.
"It's a fight that we may be able to win if enough legislators hear from their constituents," he added.
Before its December recess, the House passed a similar version of the bill by a six-vote margin, 212 to 206.
The original House version of the bill, before intense negotiations with the Senate, passed on Nov. 18 by a two-vote margin, 217 to 215.
What if the bill passes?
Federal student aid would be reduced by $12.7 billion. Most of the cost savings would come from increasing interest rates on student loans.
"Simply put, it will make college less affordable," Pals said.
How would interest rates change?
Students would pay a fixed 6.8 percent rate on Stafford loans, an increase from current rates. (Stafford loans now have a variable interest rate capped at 8.25 percent. Rates are tied to market conditions.)
Rates on parent loans would increase from 7.9 percent to 8.5 percent.
To get the day's news and headlines in your inbox each morning, sign up for our email newsletters.
When would the new interest rates go into effect?
New interest rates would go into effect in July 2006.
How would the increases affect student borrowers?
The impact on individual students would depend on the amount of money borrowed and the amount of time used to pay off loans.
The State PIRGs' Higher Education Project estimates that the average student, who leaves school with $17,500 in loans, would owe $5,800 more in interest payments if the bill is signed into law.
What would the additional revenue be used to fund?
The additional revenue created by raising the interest rates on student loans could be used to fund tax cuts as part of congressional deficit reduction efforts.
"The problem is Congress is asking middle-class students to be revenue generators for wealthy Americans," Swarthout said.
Contact the State & National Editor at stntdesk@unc.edu.