Andy would probably be gaining on him in Canada anyway, because he got 600 points there last year, but obviously this makes it easier for him.
Andy had a full week off before travelling to Washington, so I think that's fine. He'll probably ease himself back into training, which he seems to prefer when he changes surface, and get used to the time zone and fulfil some sponsor commitments. If he's still tired, he'll just take it easy IMO.
Fed has pulled out of the Rogers Cup and, as he has points to defend, it's possible for Andy to start gaining on him from now on. Doubt if Andy can make No 2 before USOpen but very likely after. No 2 going into 2016 would be great.