A Wisconsin congresswoman wants U-S Senator Ron Johnson to testify as Democrats work to impeach the president.  Milwaukee Democrat Gwen Moore made the comment Wednesday.  Moore says the Republican senator heard President Trump’s phone call to the Ukraine president and she wants him to appear at any impeachment hearings to reveal what was said.  Johnson has said more than once that the president told him he never threatened to withhold aid from Ukraine in exchange for a promise to investigate Joe Biden.