GRAND RAPIDS (WZZM) - The wet weather didn't stop a large crowd from gathering in downtown Grand Rapids at noon.

It waspart of a nationwide rally for religious freedom. About 400 people gathered at Calder Plaza. People of various faithscameto demonstrate their opposition to the Obama administration's health care mandate - expecially it's requirement that employers offer birth control and other reproductive services through their healthcare plans.

Tom Grego of Grand Rapids was in the crowd. "We're not gonna obey this law - and we're gonna go to jail if we have to - if it comes to that" Grego said."When they pass a law that tells me I've got to go contrary to what my church teaches - that's how (religious freedom) is threatened."

Similar rallies were held in over 100 U.S. cities today, including seven in Michigan. They come days before the U.S. Supreme court begins hearing arguments on whether the Obama health plan contains provisions that violate the law.