we look at the loophole that may get them -- let them get away with it. plus, a proposed superweapon, capable of striking anywhere on the planet, with pinpoint accuracy in under an hour. could it make nuclear weapons obsolete? wolf blitzer's off today. i'm suzanne malveaux. welcome to our viewers in the united states and around the world. world. you're in "the situation room." -- captions by vitac -- www.vitac.com well, it is one of the most sweeping measures targeting illegal immigrants in decades, and it is now law in arizona. thousands of protesters are rallying against the bill. governor jan brewer signed it just 90 minutes ago. the most controversial provision requires police to question the immigration status of somebody who they suspect may be in the united states illegally. now, critics say that could lead to racial profiling. brewer says arizona's rising crime rate was key in her decision to sign this.