What should be done with the illegal immigrants entering a county?

I feel since so many illegal immigrants have come here we have gotten more crime, gangs, rapes and more people getting robbed...I have been in Las Vegas for 30 plus years and have never seen so much crime..Homes are getting broken into even during the day and the people are even still home...I have never seen so much crime here in the last years... Laws are the books why can't they be followed. Everyone is saying we need the immigrants...Yes we need some, but not to be flooded and then demand they become legal without going thru the proper paperwork...Or come and push their language on us...Look back in the Laws and all the people who came here had to follow the Laws..The Government needs to stand by its Laws. Everyone is saying if we send them home that everything will cost more...But the counry is in trouble now. People are losing their homes as wages don't cover the cost...Gas is going sky high and that has nothing to do with if we deport them...But then part of it is the high demand for gas as to many people... It is hard to put a number, but I feel the government needs to slow it down somehow..Maybe only give so many visas a year. But something has to be done with the ones who are here illegally and have no intendion of becoming legal....