Trump admin updates: Vance meets with Zelenskyy in Rome

Democrats are preparing to announce plans to place holds on Trump's political Department of Justice nominees as they continue to raise concerns about ABC News' reporting that Trump has plans to accept an airplane from the Qataris to use as Air Force One.

Sen. Jeanne Shaheen, the top Democrat on the Senate Foreign Relations Committee, told CNN there would be "holds placed on any judicial nominees from moving forward until we get some answers from the attorney general" concerning the plane. She also said Democrats were exploring other judicial avenues.

Senate Minority Leader Chuck Schumer is expected to announce Democrats' intention to put holds in place on judicial nominees during floor remarks later Tuesday morning.

The move is a striking, though largely symbolic one from Democrats.

Republicans will just have to go through the normal process to advance nominees, and these nominees can still be confirmed even with a Democratic hold in place.

-ABC News' Allison Pecorin

Trump and Saudi Arabian Crown Prince Mohammed bin Salman signed an agreement of strategic economic partnership Tuesday afternoon covering a range of U.S. and Saudi departments.

Trump and bin Salman sat at opposite tables across the ballroom to sign the agreements.

The memos of understanding included the Department of Energy, Department of Defense, Interior Department, Department of Justice and cooperation on infectious disease.

There was no immediate announcement from the White House detailing what exactly was in these agreements.

-ABC News' Justin Gomez

Trump and Saudi Arabian Crown Prince Mohammed bin Salman had a bilateral meeting shortly after Trump was welcomed to Riyadh on Tuesday.

The leaders spoke warmly about their relationship and Trump touted the investment that was going to be made in America by the Saudis during the first comments to the press this trip.

Bin Salman kicked off the meeting by greeting Trump and said the leaders would discuss "security" among other things.

Trump also praised his relationship with bin Salman, saying it has been a "tremendous relationship over the years."

He later added, "I really believe we like each other a lot."

-ABC News' Michelle Stoddart

Trump's Middle East trip has no overarching diplomatic goal, instead it is focused largely on boosting business ties between the U.S. and the region that is vital to the Trump family's own financial interests.

Moments after touching down in Saudi Arabia, Trump was greeted at the airport by the head of the Saudi Wealth Fund, which has invested $2 billion with Jared Kushner's fund and in the LIV Golf tour that has hosted multiple events at Trump properties.

The president's sons who now run the Trump Organization have lucrative real estate deals in the works in all three countries the president is visiting this week, including a $5.5 billion golf resort just north of Doha, where the president will be Wednesday.

The Trump cryptocurrency business also recently announced a deal including a $2 billion contribution from an affiliate of the United Arab Emirates, where the president concludes his trip.

-ABC News' Mary Bruce and Ben Siegel