One of the things that baffled me the most about the recent election was the topic of illegal immigration. It was rarely mentioned by either candidate, and the media didn't force the issue.
Here's some background info: there are now roughly 12 million illegal immigrants in the U.S. To put this into perspective, that's as many people as there are in the entire state of Ohio. So now you have a state-sized group of people in the U.S. who aren't paying taxes, have no legal status, etc. And this isn't a problem?
The solutions I see put forth on this issue are mostly fiction. You can't arrest twelve million people. Building fences and increasing security costs money.
In its simplest form, illegal immigration is an economic issue. Immigrants come to the U.S. because they can earn higher wages here. As long as businesses will hire illegal immigrants, they will find a way to get here.