Article snippet: WASHINGTON — The shifting White House explanation for President Trump’s decision to withhold military aid from Ukraine drew alarm Friday from Republicans as the impeachment inquiry brought a new test of their alliance. Trump, in remarks at the White House, stood by his acting chief of staff, Mick Mulvaney, whose earlier comments undermined the administration’s defense in the impeachment probe. Speaking Thursday at a news conference, Mulvaney essentially acknowledged a quid pro quo with Ukraine that Trump has long denied, saying US aid was withheld from Kyiv to push for an investigation of the Democratic National Committee and the 2016 election. He later clarified his remarks. Trump appeared satisfied with Mulvaney’s clarification and the president dismissed the entire House inquiry as ‘‘a terrible witch hunt. This is so bad for our country.’’ But former Ohio governor John Kasich, who ran against Trump in the 2016 Republican primary, said he now supports impeaching the president. Mulvaney’s admission, he said, was the ‘‘final straw.’’ ‘'The last 24 hours has really forced me to review all of this,’’ Kasich said on CNN. EDITORIAL: Mulvaney’s confession confirms wrongdoing — on multiple levels In Congress, at least one Republican, Representative Francis Rooney of Florida, spoke out publicly, telling reporters that he and others were concerned by Mulvaney’s remarks. Rooney said he’s open to considering all sides in the impeachment inquiry. He also said Mulvaney’s co... Link to the full article to read more