A breathless Gov. Sarah Palin announced that she will step down from her post as Alaska governor at the end of the month, giving no details about her motivation or future plans. In a news conference from her Wasilla, Alaska, home, the first-term GOP governor said, "This decision has been in the works for awhile," adding that, "I'm not wired to operate under the same old politics as usual." Amid speculation that Sen. John McCain's 2008 vice presidential running mate has had her eye on the 2012 presidential race, it's unclear why she's leaving before the end of her term. Her run as governor ends in 2010. Palin, 45, did not take questions after her announcement, but compared herself to a good basketball point guard facing "a full court press...