Sen. Kelly Ayotte returned home to New Hampshire Friday, planning to see “The Nutcracker” with her daughter this weekend. But there was an unexpected conflict: Texas Sen. Ted Cruz. Cruz, along with Utah Sen. Mike Lee, took to the floor Friday night to demand Republicans stop President Barack Obama’s executive action on immigration and scuttled a bipartisan agreement to push back votes until Monday, effectively forcing the Senate to return for a rare weekend session and cast a marathon series of procedural votes. Senior Republicans say there’s a problem with Cruz’s strategy: The GOP lacks the votes to stop Obama...