Sen. Mike Enzi is among the many House and Senate Republicans who have signed a pledge against tax increases but now says it's a bad idea for lawmakers to sign pledges.
Enzi says he won't be bound by any pledge except the oath of office. That includes the Americans for Tax Reform pledge, which he signed during his first Senate campaign in 1996.
The pledge is getting new attention while lawmakers and President Barack Obama try to address the budget deficit. Steep tax increases and budget cuts will automatically take effect next year if they don't agree to more moderate measures.
Obama favors higher taxes for the highest incomes. Enzi says he won't commit to any approach unless it's part of specific legislation that is headed to a vote.