A non-practicing lawyer, Mac Donald has clerked for the Honorable Stephen Reinhardt, General Counsel of the U.S. Environmental Protection Agency. She was recipient of the 2005 Bradley Prize for Outstanding Intellectual Achievement. Her writings on national security issues have appeared in the Wall Street Journal, the Weekly Standard, the New York Post, National Review Online and the Washington Post.

Heather Mac Donald also participated in:

Let's Stop Welcoming Undocumented Immigrants - For