His and the Republicans only focus is to undo 8 years of Obama.  The whole birther movement was exactly that.  They figured if they could somehow prove that Obama was somehow illegitimate, then they could erase everything he did the day he was tossed out of office.  Since that failed, now they are spending all of their time trying to do it via EOs or via legislation.  Unfortunately, this is a horrible precedent, as it sets the stage for the next President to spend all of his time just undoing what the last guy did, and the one after that just erasing his predecessor and on and on.  This is not a good thing for the country.