Article snippet: WASHINGTON — Democrats moved assertively Monday to increase political pressure on the White House and congressional Republicans to furnish documentation about explosive allegations that President Donald Trump sought to pressure the Ukrainian president to help produce damaging information on a leading political rival. In the House, where the revelations about a conversation between Trump and the Ukrainian leader, Volodymyr Zelenskiy, were fueling new calls for impeachment, the chairmen of three committees investigating the matter threatened to issue subpoenas in the coming days if the administration did not hand over a transcript of the call and a related whistleblower complaint. Trump acknowledged Sunday that he had leveled allegations of corruption against former Vice President Joe Biden with Zelenskiy, but on Monday, he denied that he had pressured the Ukrainian president to investigate and used a package of hundreds of millions of dollars in security aid as leverage. Trump has defended the conversation as entirely appropriate. Still, Democrats are demanding to see evidence. On Monday, they said a failure by the administration to disclose a complaint about Trump’s interactions with Zelenskiy would be considered obstruction, an indication that they could consider it as grounds for impeachment. “If press reports are accurate, such corrupt use of presidential power for the president’s personal political interest — and not for the national interest — is a betrayal... Link to the full article to read more