WASHINGTON, March 20 -- Sen. Markwayne Mullin, R-Oklahoma, issued the following news release: * * * Senator Mullin to Host Live Telephone Town Hall on Monday 3/24 Washington, D.C. - U.S. Senator Markwayne Mullin (R-OK) will host his next live telephone town hall event for all Oklahomans on Monday, March 24th at 6:00 pm CT. During the call, Mullin will provide a quick legislative update before opening the phones to take questions from constituents. "Monday's telephone town hall event will be more PR