To Act or not to Act

Michael Warren has some intriguing inside reporting on what congressional Republicans are thinking about doing in response to sweeping executive action on immigration.  Josh Siegel also outlines some of the various strategies being considered by Republicans.

A question that still needs to be addressed: will any Democrats in Congress complain about a shift toward executive supremacy?  Some on the left outside of Congress have warned about the precedent potentially being set by President Obama here.  Will any elected Democrat speak out?