President Obama has a tough decision to make on the timing of an executive order to freeze deportations of illegal immigrants. Senate Democrats want him to wait to give them time to pass an omnibus spending bill and other legislative priorities in the lame-duck session that is just now ramping up. But delaying the action, even for a few weeks, could make Obama look weak and inflame immigration advocates who are already furious with him for holding back until after the midterm elections. “You have growing anxiety amongst the immigrant community that’s losing faith that the president is going to...