I believe they will make some efforts in this case. I agree that their main concern is their careers and their power.
Losing their power is a serious problem for legislators of both parties.
I would like to see them go to the mat on this one.
Obama is willing to risk everything.
While it may not be illegal to do what he is doing, the legislature also have some things they can do that are not illegal which will counter Obama.
I keep wondering what would happen if the legislature would defund the government .?
shut the whole thing down for a year or two. No bureaucrats, no military, no courts, no welfare, no social security, no taxes, nothing. Of course the individual states would pick up the slack on administration and border protection. Churches could help out with the charitable causes. I believe it would be a chance for a new beginning to rid ourselves of the beast in Washington that is no longer functioning as intended.
I like your idea.