The super PAC supporting Sen. Marco Rubio's presidential bid is on the air with a $1 million-plus television advertising buy; the announcement came one day after Former Florida Gov. Jeb Bush's super PAC announced its first paid ad — a digital spot. Conservative Solutions Project, the super PAC behind Rubio, Florida's junior senator, is running its ad on Fox News Channel and other cable stations, asking viewers to tell their senators to join him in opposing President Obama's "bad deal" with Iran. Obama is in the final stages of negotiating a deal with Tehran to limit the Islamic regime's nuclear...