Anti-illegal immigration activist Chris Simcox is slated to announce Wednesday that he will challenge Arizona Sen. John McCain in a Republican primary in 2010.

A Simcox media coordinator confirmed that he has several media events scheduled across the state, including an announcement at the Arizona State Capitol in Phoenix. Simcox also has a campaign Web site set up — www.simcoxforsenate.com.

“It’s time to help put Arizona and America back on the right track by electing Chris Simcox to represent the Great State of Arizona in the United States Senate,” the site says. “As a grass-roots, border security activist and founder of the original Minuteman Civil Defense Corps (MCDC), Chris has done more to make Arizona a safer and better place to live than most of the sanctimonious career politicians in Washington, D.C.”