U.S. Sen. John McCain, in a tweet on Feb. 24, urged Arizona's governor to veto a bill that would allow businesses to refuse to serve gay people.
The Religious Freedom Restoration Act is before Republican Gov. Jan Brewer. The measure would allow for individuals, businesses, organizations and institutions to cite religious beliefs as a cause to discriminate against LGBT people and refuse them service.
A growing number of civil rights groups, businesses and organizations have called on Brewer to veto the measure.
On Feb. 24, McCain, the senior Republican senator from the state, tweeted, "I hope Governor Brewer will veto #SB1062."
Republicans introduced the bill, one of several introduced in state legislatures this year, saying they mostly wanted to protect small business owners who, because of their religious beliefs, don't want to serve same-sex couples who are getting married or are married.
Same-sex marriage, however, is not legal in Arizona.