You don't get to do everything possible to create a flood of immigrants, vote against any money to expand and improve the facilities and then complain about them. Your concern for the children is admirable but you are blaming the wrong people.
When I heard they were being briefed I considered it a security risk. You don't tell your enemies your moves. Same reason Wray is withholding things from Congress to keep them away from Schiff. Trump needs Congress for approval of war but not for kinetic action. I hope he fed them a bunch of malarkey so they'd report it to their handlers.