Pres. Trump responds to Calif. billionaire urging impeachment

President Donald Trump is responding to California billionaire Tom Steyer who has vowed to spend at least $10 million in advertising calling for the president's impeachment.Trump is using Twitter to call Steyer "wacky & totally unhinged."He says Steyer "has been fighting me and my Make America Great Again agenda from the beginning," adding the billionaire environmentalist "never wins elections!"Steyer recently launched the advertising, which has been running on Fox News and other national ou