A grieving Newtown mother gave President Obama's weekly radio address Saturday, making an emotional plea to Congress and the country as the Senate prepares to vote next week on legislation aimed at curbing gun violence. "Sometimes I close my eyes and all I can remember is that awful day, waiting at the Sandy Hook Firehouse for the boy that would never come home," said Francine Wheeler, who lost her son, Benjamin, 6, in the shooting. "But other times I feel Ben's presence filling me with courage for what I have to do."