Read my post #32 to 353FMG. On principle, I suppose the House could schedule a weekly vote to impeach President Obama. That’s about how often he does something impeachable, but those impeachment votes won’t go anywhere. I’m not saying it’s bad to take a stand on principle, but the cost of taking such a stand could be very high and actually work against said principle in practice.
If the GOP House is afraid to impeach the President, that's fine. But, in that case, they should quit claiming that the President is violating the Constitution because that implies an obligation to impeach in order to protect the Constitution. A Congressman should try to avoid looking like a coward if he/she can, don't you think?