US troops in Mexico?

Rick Perry suggests US military role in Mexico drug war: Texas Governor Rick Perry – who is seeking the Republican nomination for US president – has said he would consider sending American troops into Mexico to combat drug-related violence.”

That doesn’t seem like a good idea. My biggest concern is that there will be near-universal recognition that it is a bad idea, so Perry will lose to Obama in 2012, and then President Obama will invade Mexico. Look for Predator drones in northern Mexico, followed by attacks on narco-terrorist kingpins in safe-haven areas like San Diego.