WASHINGTON (AP) — President Barack Obama is facing mounting calls from Republicans to take a firsthand look at the immigration emergency at the U.S.-Mexico border, putting him on the spot concerning what he has called the “humanitarian crisis” of tens of thousands of unaccompanied children flooding in from Central America.

“If he doesn’t come to the border, I think it’s a real reflection of his lack of concern of what’s really going on there,” declared Texas Gov. Rick Perry, a possible GOP presidential candidate in 2016.