Colorado Attorney General John Suthers is in Washington today as the state and others challenge the health care law.
The Republican attorney general is in Washington is not arguing before the high court on the health law, but instead there to watch the proceedings.
Colorado is one of 26 states that have challenged the law as beyond the powers of the federal government.
The Supreme Court has scheduled three days of arguments on the health law. If upheld, the law will force dramatic changes in the way insurance companies do business, including forbidding them from denying coverage over existing medical conditions and limiting how much they can charge older people.
Read more at the Denver Post