The simple solution is close the border, period! When there can be no unauthorized travel or trade in either direction then both countries will be safe. It’s a win win solution, so I wonder why the administrations of both countries are against it (sarc)
The easy common sense solutions to America's problems have voiced, written, typed, screamed, demanded and pleaded 50 million times.
It should be clear to all, government has no interest in solutions or what might benefit the American people.