Key Republicans and Democrats in Congress have been stalwart supporters of Ukrainian President Volodymyr Zelenskyy, but the blowup between the Ukrainian leader and President Donald Trump is threatening to change that.

Before President Zelensky arrived at the White House, President Trump - who waited briefly outside before greeting his Ukrainian counterpart - was asked by a reporter if he felt it was going to be a good meeting. Trump gave no words in response, and flashed a thumbs-up instead.

Ukrainian President Volodymyr Zelenskiy is set to meet President Donald Trump and seal a deal for U.S. participation in Ukraine's mineral industry on Friday as Kyiv works to regain U.S. support to fight Russia's invasion while Trump opens talks with Moscow.