I posted a few days ago about the tension between supporting improved food safety and supporting small/local agriculture. A really good treatment of this question as regarding S. 510 is up at Food Safety News. Go give it a read, here.
Basically it says that while small farmers' concerns are valid, the pending legislation does enough to protect small farms and is, when all's said and done, extremely important to our food safety system. I agree. It's time to bring S. 510 to a floor vote. Write or call your senator today.