WASHINGTON - The Senate recently faced a very difficult choice. When a July 1 deadline passed, the interest rate on federal student loans was set to double. American students and parents who worry every single day about whether they can afford college cannot be burdened with such an enormous rate hike. The Senate approved legislation to temporarily resolve this crisis, but left the door open to future rate increases. I voted in favor of this legislation, but I also favor action to avert future rate increases.