Catholic NFL Champ Matt Birk Skipped White House Trip Because Obama Said 'God Bless' Planned Parenthood
Baltimore Ravens center Matt Birk boycotts White House visit - Los Angeles Times
Matt Birk - Simple English Wikipedia, the free encyclopedia
Matt Birk skips Ravens' White House trip over Obama abortion stance
Red Sox White House visit: Other times athletes' politics clashed with presidents
Athlete Chat: Baltimore Ravens Center Matt Birk
Some Patriots players say they won't visit Trump's White House - The Washington Post
How often have athletes snubbed the White House? – The Denver Post
Former Raven/Harvard grad Matt Birk popped up on my feed, and not in a good way: : r/ravens