There are some Republicans who are now suggesting that Congress give Obama complete control over where and how the sequestration cuts are to be made. And then when he does what they expect, that is move money from defense programs to reduce the cuts to domestic programs, that this could be construed as violating his oath of office since this will make America less safe and therefore more vulnerable to attacks from our nation's enemies.
One person stated that since a recent poll showed that a majority of Republicans already think that Obama should be impeached, it's just that when asked what the basis for such an impeachment would be, they were at a loss for providing a valid reason, so that this could be used to supply this majority with what they would all agree was a valid reason.

OCU