Trump seethes over impeachment inquiry and slams critics

WASHINGTON - US President Donald Trump is seething over an impeachment inquiry after Democrats subpoenaed the White House about contacts with Ukraine and he signaled his administration would not cooperate.

In a series of tweets on Saturday, sent as the presidential motorcade ferried him to his Virginia golf course, Trump defended his comments and lashed out at critics, including a past foil, Mitt Romney, a Republican US senator from Utah.

"This is a fraud against the American people!" the president tweeted.