Martha Bowes MacCallum (born on January 31, 1964) is an American news anchor on the Fox News Channel. She joined the network in 2004, and is based in the New York City bureau. She previously hosted The Live Desk with Trace Gallagher at 1:00 p.m. ET. Currently, she co-hosts America's Newsroom with Bill Hemmer at 9:00 a.m. ET.