And why is it such a problem now?

Bonus sidenote: Obama was known as the deporter in chief, having deported way more illegal immigrants than any administration before him. Yet his approach was still considered as if he wasn't deporting anyone according to many rightwingers.

And despite that fact, it is now (Now, apr/may/june/july 2018. Obama is quite out of the picture BTW) which this family separation thing hits the news cycle. I wonder why ...