that was to be held in the United States, I think she would be not be allowed entry into the country.

BTW, the same thing happened to Yusuf Islam AKA Cat Stevens (I used to listen to his music many years ago): https://en.wikipedia.org/wiki/Cat_Stevens

http://www.nytimes.com/2015/11/27/world/asia/miss-world-contestant-barred-from-final-in-china-over-human-rights-advocacy.html