The number of border crossings is on the rise as migrants and smugglers appear no longer deterred by the president’s crackdown on illegal immigration.
Experts say some measures targeted are more effective than a wall, resulting in an approach a Republican congressman called “a third-century solution to a 21st-century problem.”
A month after one border agent was killed and another seriously injured, investigators still do not know if they were attacked or hurt in an accident.
To address rising numbers of border crossings, officials may begin detaining parents apart from their children, a change in practice that immigrant advocates criticized as cruel.
A decrease in arrests at the border shows that the administration’s deterrence efforts are effective, Homeland Security officials said.
The F.B.I. is investigating the apparent attack on two border officers in the Texas desert, which killed one and came amid a rise in assaults on agents.