President Obama's plans to overhaul the health care system would require all Americans to buy health insurance.

Obama was against this requirement during his campaign, but has since changed his position.

Congress seems to be embracing the idea of the required health care.

There would be a hardship waiver, exempting poor people from having to pay.

Covering 50 million uninsured Americans could cost as much as $1.5 trillion over the next ten years.