It seems pretty clear that Obama has become radioactive even in Democrat circles, in particular, for going around Congress's Constitutional responsibility.
Senate Democrats at risk of losing re-election in moderate or conservative-leaning states this fall are wary about President Obama using his executive powers to sidestep Congress and act alone on immigration reform.
Their biggest concerns appear to be that Obama will expand his 2012 executive action that deferred deportation for young illegal immigrants by extending it to as many as 5 million more people living illegally in the United States.
http://www.foxnews.com/politics/2014/08/17/vulnerable-senate-democrats-wary-obama-using-executive-powers-on-immigration/?intcmp=latestnews
However, I would rather just sweep them out of office as it's more than just one policy that they are as wrong as wrong can be on.