The Democrats made a forceful move this morning to defeat the first Republican effort to cripple the immigration overhaul. Majority Leader Harry Reid, D-Nev., opened the third day of proceedings by moving to table, and thereby kill, the opening GOP bid for bolstering the bill’s border security provisions. The amendment was designed to impose such a high threshold for border security that the "gang of eight" coalition behind the underlying bill would fracture. But Reid's maneuver to kill it without so much as a fare thee well also threatens to upend the rickety bipartisan agreement to stay on course for a textbook friendly debate. (more…)