Say one thing during the campaign, do another

You've seen it before. He says one thing during the rush up to getting elected, and then he does something completely different when elected because he enjoys the power of controlling others' lives for the "greater good." 

There was a time when Obama was against a mandate. That was when he was running against Hillary Clinton, who supported mandates. 

Health care was front and center during the primary (and general election), and one of the key distinctions Obama drew between his plan and Hillary's plan was that Obama would not have a mandate:

"The reason she thinks that there are more people covered under her plan than mine, is because of a mandate. It is not a mandate for the government to provide coverage to everybody. It is a mandate that every individual purchase health care. And the mailing that we put out accurately indicates that the main difference between Senator Clinton's plan and mine is the fact that she would force, in some fashion, individuals to purchase health care ...."