President Felipe Calderon of Mexico reacted sourly to news of the Senate's rejection of the proposed immigration law overhaul, calling the senators' action "a grave error." "It's a grave mistake first because it's a problem that's not being confronted, and with this evasive action the U.S. Senate is making it worse," Calderon told reporters in Mexico City during a joint news conference with President Daniel Ortega of Nicaragua, who is finishing a two-day visit to the Mexican capital. "Secondly, because to close the door on legal immigration, the only thing the Senate does is open the door to illegal immigration"...