Gun control backers struggle to win some Democrats - Mar 28th, 2013 - National
— Gun control groups are holding rallies around the country today aimed at pressuring senators to back the effort.
And President Barack Obama is meeting at the White House with gun violence victims.
Gun control supporters are struggling to win over moderate Democrats for their drive to push expanded background checks through the Senate next month.
A $12 million TV advertising gun control campaign is being financed by New York Mayor Michael Bloomberg.