First, the neoliberal president who appointed the Catfood Commission and who 10 days ago made Social Security cuts part of "fiscal cliff" talks is not going to nominate Paul Krugman to be his next Treasury Secretary to replace Little Timmy Geithner. In fact, Beltway rumor is solidifying that the Compromiser in Chief will nominate his chief of staff, Jack Lew.
Second, Krugman wouldn't take it if offered. Besides leaving both academia and the New York Times, he knows that Obama would geld him somehow, like by moving the real action to the Council of Economic Advisors, plus nominating Geithner to replace Ben Bernanke at the Fed next year.
Yeah, yeah, Obama said almost four full years ago that he wanted to be pressured from the left. Don't tell me you still actually believe that.
This is just the surface of the issue.
Unless I'm in full idealism mode, I prefer online petition drives that are:
1. Relatively realistic;
2. Not in some way connected to fundraising efforts.
The Krugman petition does, as far as I know (especially if it's a White House site one) theoretically cross the second bar. But, it doesn't cross the first.
That's why I don't do global warming petitions to Obama. They're unrealistic, not just because of Mitch McConnell and John Boehner, but also because of Barack Obama. And, they're usually connected to fundraising, especially by Gang Green enviros.