Fox “Straight News” Anchor MacCallum: If Warren Buffett Wants Fair Taxes, “Why Isn't He Talking About A Flat Tax Rate?” Written by Media Matters Staff Published 01/12/12 9:42 AM EST From the January 12 edition of Fox News' America's Newsroom: Video file Previously: Fox's “Straight News” Anchor Martha MacCallum Again Advocates For Flat Tax On Air Fox's “Straight News” Anchor Martha MacCallum Regularly Advocates GOP Positions “Straight News” Anchor MacCallum Says “A Flat Tax Is A Better Idea” For Fox, Raising Taxes On Rich Is Class Warfare, Raising Them On The Poor Is Good Sense