[cnn-photo-caption image= http://i2.cdn.turner.com/cnn/2010/images/06/19/art.mwilliams0619.gi.jpg caption="'This initiative came from me,' Tea Party activist Mark Williams said Saturday of his new role within the Tea Party Express."]
Washington (CNN) - Conservative radio talk show host and prominent Tea Party activist Mark Williams is giving up his role as the chairman of the Tea Party Express, Williams told CNN Saturday.
Williams said his decision stemmed from his involvement in two other major projects.
One is opposing the construction of a mosque near the site of Ground Zero in New York, where the twin towers of the World Trade Center were destroyed by Islamist hijackers on September 11, 2001.
Related: Protesters descend on Ground Zero for anti-mosque demonstration
The other is leading a recall effort against some members of the Sacramento City Council and running for a spot on the local body himself after the council voted to boycott Arizona over its new immigration law.
"What I'm doing is thinking globally and acting locally," Williams said of his bi-coastal commitments.
Williams said he will continue to be involved with the Tea Party Express as a spokesman, a featured speaker at the group's events, in television and print media, and generally as a public face of the organization.
But Williams will be taking a back seat when it comes to the Tea Party Express' day-to-day managerial responsibilities.