michael teague notes that the u. s. border patrol has seen an increase in the number of entire families crossing illegally into the u. s. what might be the cause of this trend

The cause of this trend is the search for work by those families.

Explanation:

Actually, Michael Teague clearly stated that those men that migrate illegally are coming into U.S for search of work. The only thing is that the illegal migration is becoming alarming. The U.S Border Patrol is concerned due to the illegal smuggling activities going on in the border.