Let us be honest, the Democratic Party is against controlling illegal immigration because they regard White Voters to be their enemy and they want to make them the minority ASAP, and that is why they are trying to block the border wall.
The only reason why Obama did not granted amnesty to those immigrants' children(And which they said that he could of had done) , it is that they wanted a hold on them. To control them. If they doesn't do what they want them to do, that they will threaten the immigrants that they will deport their children back to the land of rapist. And so the immigrants will beg them not to send their children back to land of rapist like a hungry dog for food. And so they went back smuggling the drugs into this country for them.