Of course, McCarthy is going to be absolutely gitty about promising the president more border enforcement. These RINOs are now following the same playbook that did with the Reagan amnesty.  As soon as they received amnesty, all the talk, all the promises, all the funding will be withdrawn from the border and immigration enforcement. 
If McCarthy was really serious about addressing illegal immigration, he would commit himself to passing birthright citizenship reform as an aspect of Pres. Trump's "internal enforcement" requirement.