Thursday was another busy day for the Gang of 8 immigration reform effort, which has come to mean Sen. Marco Rubio (R-Fla.) and his staff were everywhere on talk radio, on the Senate floor, at a press conference, manning their new Web site and sending batches of e-mails to the media to debunk attacks. Sen. Marco Rubio (R-Fla.) (Alex Wong/Getty Images) Rubio announced his delight that a third hearing, this one by the Joint House and Senate Economic Committee had been scheduled. (“We need more transparency and greater scrutiny of this bill as the process continues, and it’s important for...