Not to pick nits, but Trump is the guy who lit this issue on FIRE over the last couple months. It's what catapulted him into the stratosphere in the Republican rankings.
I think he gets it. He's just seeking expert policy advisers, at this point.
Trump has not said much about LEGAL immigration, yet, except the same bromides that he loves legal immigration. There have been people speaking about this immigration nightmare going all the back to the late 80s. Trump caused a firestorm because we have been getting blasted on this issue by the GOPe & the left.
Trump did a good job of highlighting the trail of devastation and destruction by criminal aliens. He did not touch legal immigration and the damage it is doing to American workers and their loss of jobs and depressed wages. We have a surplus of labor yet we continue to bring in 1.1 million legal permanent workers a year and 640,000 guest workers annually.