NEW : `` My concern is not whether our colleague Sen. Clinton is qualified to be secretary of state or not . Sen. John McCain urges colleagues to confirm Hillary Clinton . Obama says he will nominate a new nominee for secretary of state by the end of this week and that his choice should be someone who is "ready to serve in an important position" at Foggy Bot@@ Clinton submits letter of resignation from the Senate . Former President Clinton pledges to limit foreign donations .
NEW : Sen. John McCain urges colleagues to confirm Hillary Clinton . Obama says he will nominate a new nominee for secretary of state by the end of this week and that his choice should be someone who is "ready to serve in an important position" at Foggy Bot@@ Clinton submits letter of resignation from the Senate . Former President Clinton pledges to limit foreign donations .