"Parks and Recreation" star and NASCAR pitchman Nick Offerman said he and his wife Megan Mullally had canceled a scheduled May performance in Indiana because of the state's new Religious Freedom Restoration Act.

The indie rock band Wilco announced Monday it too had canceled a concert in Indiana.

We're canceling our 5/7 show in Indianapolis. “Indiana Religious Freedom Restoration Act” feels like thinly disguised legal discrimination.

— WILCO (@Wilco) March 30, 2015

Hope to get back to the Hoosier State someday soon, when this odious measure is repealed. Refunds available at point of purchase.

— WILCO (@Wilco) March 30, 2015

The artists' moves are part of the growing backlash against a law critics say could allow businesses to discriminate based on sexual orientation.

Indiana Gov. Mike Pence, who signed the law, held a news conference Monday saying he wants legislation on his desk by week's end would make clear the law does not allow businesses "to deny services to anyone." 

Washington state Gov. Jay Inslee and Connecticut Gov. Dannel Malloy said Monday they were imposing bans on state-funded travel to Indiana. Seattle Mayor Ed Murray, who is openly gay, issued a similar ban via executive order over the weekend.

The NCAA Final Four is being held in Indianapolis in four days. The NCAA, which is based in Indianapolis, has repeatedly expressed concerns over the law. "We are especially concerned about how this legislation could affect our student-athletes and employees," NCAA president Mark Emmert said. "We intend to closely examine the implications of this bill and how it might affect future events as well as our workforce."