"I searched for a man among them who would build up a wall and stand in the gap before Me for the land, so I would not destroy it; but I found no one." Ezekial 22:30. NASB
He's talked about reducing regulations to reduce costs of doing business. He's talked about increasing energy production to reduce costs of using energy. He's talked about reducing government departments and government spending.
A 100% tariff on goods from Mexico would make the situation worse. People with good jobs in Mexico have less reason to come here. We need to put those tariffs on China to move the jobs to Mexico and the US.
Yes, immigration is the best solution.
The problem is that there are people who want to come here legally and we won't let them. We treat them terribly for trying to obey our laws.
People who break through the wall or fence and trample on the property of our citizens are rewarded with...