I'm about to meet with several members of the United States Senate and Congress over the next few weeks. What should I talk about?

First, they will be from both sides if the aisle. Second, one of them in particular has a fair amount of power. I don't think I'll have much time, so I don't want to waste any of it. What is most important, Reddit? NDAA, SOPA/internet in general, wall street accountability, etc.