1/9: Boston declares flu a public health emergency; Obama ready to act on gun control

Boston declared a public health emergency after confirmed cases of the flu reached 700 - there were just 70 at this time last year. Dr. Jon LaPook reports on what's behind the surge and what's being done to stop it; And, White House officials tell CBS News that President Obama is likely to unveil new ideas to reduce gun violence next week. And, as Major Garrett reports, they say the president is ready to act with or without Congress.