No, the last time was during the Obama administration. Do you really think that locking up children with their parents when they commit a crime is preferable to separating them?

If you committed a crime with your child there would you expect to be kept with your child or separated?

Why do you think so many unaccompanied minors are coming?

It is because Obama granted unaccompanied minors blanket amnesty, thereby encouraging people to send children here alone in record numbers. You can thank him for the magnitude.