Why is there an Immigration Problem?

As I turn on the television and read the newspapers, immigration is the current topic dominating the headlines.  In school and throughout my life I was always told that to solve a problem, you must recognize and understand the problem.  In that vein, I ask President Trump, Majority Leader McConnell, and Speaker Pelosi a simple question.

WHY DOES THE UNITED STATES HAVE AN IMMIGRATION ISSUE?

The answer is simple. The United States of America is still the greatest place on the face of the earth to live.