I haven't noticed any rise in racist rhetoric directly correlated to the new pres. Certainly people who know me don't say even casually racist things around me because of my particular situation.
I can see why people don't like these laws and I can see why people approve. As a man married to a Columbian woman that looks as white as any european ever, I can tell you that the law is flawed if it counts on visual queues to be enacted. You can't tell if someone is an illegal immigrant based on the way they look.
If a police officer has probable cause to suspect someone is an illegal alien than they should have some way of bringing that line of questioning to a reasonable conclusion - whether that should involve INS or not, I don't know. The correlary to this issue, making illegals afraid to involve the police in situations that they should be involved in, really needs to be addressed in any law like this that gets passed. People in this country (legal or illegal) CAN NOT be afraid to call 911 when the need arises.