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This President coined the epithet "muckraker".

Explanation
"Muckraker" is a term used to describe journalists who dig out "dirt" and write exposes. It was coined by Theodore Roosevelt and is often used to describe writers like Upton Sinclair, whose book, "The Jungle", describes the evils of the squalid conditions of factory workers in the packing industry. Roosevelt got the term "Muckraker" from a book called Pilgrims Progress, which, at one point, was the most widely read English language book after the Bible. Roosevelt first used the term in reference to a series of articles in a Hearst publication that exposed unsavory political and personal facts about leading members of the Senate.