Re: 7X05 The Angels Take Manhattan (Grading/Discussion) (SPOILERS!)
He can still go see them. He just cant take them out of their new timeline.
Heck he could even take them on the tardis as long as he dropped them back where he found them.
If you're one of the meatheads constantly droning on about "take my country back"... GET OVER IT. The confederacy LOST.