MADISON, Wis. (AP) - Wisconsin Republican Sen. Ron Johnson says Donald Trump should apologize for disparaging the bereaved parents of U.S. Army Capt. Humayun Khan, a Muslim who was awarded a Bronze Star after he was killed in 2004 in Iraq.

Johnson had earlier praised the Khan family in a statement that did not mention Trump. But he went farther in an interview Wednesday on WTMJ Radio, calling for Trump to apologize.

But Johnson refused to withdraw his support of Trump. Johnson was asked what it would take for him to no longer back Trump. He says the election is a binary choice and Trump is preferable to Democrat Hillary Clinton. Johnson says her handling of the Benghazi attack and using a private email server has “completely disqualified” her from being president.

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