President Donald Trump

As the proceedings opened on Tuesday, he offered three days, rather than two, for opening arguments from each side.

If true, Parnas' account undercuts a key Republican defense of Trump during the impeachment investigation.

It would replace the 25-year-old North American Free Trade Agreement, known as NAFTA.

Ukraine says it also is investigating reports that Russian hackers gained access to computers of the Ukrainian gas company Burisma.

The full trial will begin next week.

The budget office said it disagrees with the conclusion and that the hold on aid was appropriate.

The House also approved the chamber's prosecutors.

McConnell says there's nothing to negotiate.

The President also said he would ask NATO to become more involved in the Middle East.

She is set to meet late Tuesday with her leadership team.