Question #1: Is it true that the  IRS is going to be in charge of enforcing the mandatory health insurance  requirement?
Yes. Unfortunately, it looks like the  IRS has been given the “enforcement job” by the new health care  reform package passed by Congress. As I explained in my appearance on CNN last  week, they are probably going  to modify the IRS Form 1040 to include a section where you provide information  on your health insurance coverage. If you do not have coverage and thus  do not report health care coverage on your tax return to the IRS, you  will be assessed a tax penalty. 
Question #2: How do I find out  if the IRS has sent my refund check yet?