George Bush let UBL get away at Tora Bora. He failed to find him for the rest of his Presidency. John McCain said he would not unilaterally attack in Pakistan. Obama said he would. Credit here goes to Obama, and Republican liars can suck on that.
The Washington Times is a bullshit organization that lies for Republicans. They are, of course, going to try to credit George Bush for getting Usama Bin Laden. The facts, which Republicans don't care about, are that GW Bush blew the chance to get Usama, and then just blew it off for the rest of his presidency. Here are some quotes from Bush himself on the matter:
"The most important thing is for us to find Osama bin Laden. It is our number one priority and we will not rest until we find him." — 9/13/01
"I want justice...There's an old poster out West, as I recall, that said, 'Wanted: Dead or Alive,'" —9/17/01
"...Secondly, he is not escaping us. This is a guy, who, three months ago, was in control of a county [sic]. Now he's maybe in control of a cave. He's on the run. Listen, a while ago I said to the American people, our objective is more than bin Laden. But one of the things for certain is we're going to get him running and keep him running, and bring him to justice. And that's what's happening. He's on the run, if he's running at all. So we don't know whether he's in cave with the door shut, or a cave with the door open -- we just don't know...."—Crawford TX, 12/28/01
"I don't know where bin Laden is. I have no idea and really don't care. It's not that important. It's not our priority."—3/13/02
"I am truly not that concerned about him."—3/13/02
"I'll repeat what I said. I truly am not that concerned about him."—3/13/02
"Uhh—Gosh, I —don't think I ever said I'm not worried about Osama bin Laden. It's kind of one of those, uhh, exaggerations." — Tempe, AZ, 10/13/2004
So, yeah. George W. Bush did not make "getting Bin Laden a top priority." The Washington Times, as usual, is full of shit.
"Former President George W. Bush, who made getting bin Laden a top priority of his U.S.-led war on terrorism said in a statement: “The fight against terror goes on, but tonight America has sent an unmistakable message: No matter how long it takes, justice will be done.”"
- Getting bin Laden was top U.S. goal since 9/11 - Washington Times (view on Google Sidewiki)