Forget about capturing or deporting 12 to 20 million. The first thing I want to do is stop the flow of illegals coming in. If you have a water pipe break in the basement, the first thing you do is shut the water off, Then you can figure out how to deal with the water damage.
You should get together with the others who oppose this who say there is no jobs americans can't do. If there's no jobs americans can't do, then certainly we can do the job of policing a guest worker program.
Americans can also build fences and secure the border.
The reason we have 12 million plus illegal aliens in this country is we have not enforced the law codified in Title VIII, Section 1325 U. S. Code. Neither the current House or Senate version of the Immigration Act repeals this provision. The question is will this provision be enforced in meaningful way. I have serious doubts that will happen.
Simple, rational, linear thinking.
But who needs that when you can just join the Bash Bush party. It's the "it" thing to do these days, don't'cha know.