John Katko: “Why didn't you implement the six pillars then? Why did you wait for 14 or 16 months to implement these things?”

I think it is vitally important to look at these issues on a routine basis

They want to dupe Americans into thinking they're 'tough' on border security by embracing the ex-President's old, failed policies.

It is our job to do oversight and sometimes it is unpleasant. But the bottom line is we must never forget that you are at the head of keeping this country safe.

The truth is we have no way of knowing, but these reports demonstrate it is almost certainly an elevated and fast-growing number.