I've read it a number of time and it reads to me just the opposite.
Even if it was the Rep that said it his interpretation would have come directly from what Rove told them and based on what the administration has done to date to secure the border it would certainly seem to be the case.
Even if Bush told Rove yada yada- then Rove told King, then King told the reporter...by then it is at minimum 3rd hand and surely you remember the game of gossip. I would be furious if I believed President Bush said that, but I will not believe a 3rd or more hand account of what he said. We all know how the the media distorts things.