Saudi Deputy Crown Prince and Defense Minister Mohammed bin Salman met with Trump past year.
The two allies have a strong rapport - Saudi Arabia is where Trump went on his first official foreign visit after assuming presidency.
A senior United States official announced on Monday that a new trilateral American-Saudi-Emirati committee will be established this week, aimed at building closer coordination to counter Iran's destabilising behaviour.
Starting in Washington, D.C., on Monday, Saudi Arabia's crown prince-often referred to by his initials, MBS-is embarking on a two-week, coast-to-coast tour of the U.S.to meet with a variety of leaders from different industries.
Yet Democrats and Republicans have approached some of the crown prince's other bold steps with trepidation, particularly in the broader Middle East.
There he will discuss the planned partial sale of Saudi Aramco, the kingdom's oil giant and the golden egg underpinning the prince's Vision 2030 strategy of economic and social reform.More news: Shakib: These things happen in cricket
The news was accompanied by expressions of concern about a United States law that exposes Saudi Arabia to legal action over the 9/11 attacks, which Riyadh would dearly like to see removed. In January, a United Nations report warned that the Saudi-led coalition was using "the threat of starvation as a bargaining tool and an instrument of war".
Trump's son-in-law and senior adviser, Jared Kushner, whose budding friendship with bin Salman was seen as key to warmer U.S. -Saudi ties, is facing problems of his own, including troubles with his security clearance to questions and loans involving his family business. While the White House has been largely silent, the USA has been providing Saudi Arabia with military support for its war effort there. But the Defense Department remains committed to the Saudi effort.
"More than 90 per cent of pious Muslim women in the Muslim world do not wear abayas", Shaikh Abdullah Al Mutlaq, a member of the Council of Senior Scholars, the kingdom's highest religious body, had said, adding: "So we should not force people to wear abayas".
Prince Mohammed, in particular, has been closely identified with the three-year-old war in the Arab world's poorest country, which started while he was defence minister.
The Washington Post reported earlier this month that Trump, in a bid to hasten the end of us involvement in the war in Syria, asked Saudi's King Salman for $4 billion to rebuild and stabilize parts of Syria liberated from ISIS. "According to the Central Intelligence Agency documents and Congressional investigations, Osama bin Laden wanted to create a schism between the Middle East and the West, between Saudi Arabia and the United States of America". Salman will also need to soothe jitters after hundreds of wealthy Saudis were detained in what he has billed as an anti-corruption campaign. These protocols are normally reserved for the heads of a state of a major country or a top ally and partner of the US. He may feel compelled to make an announcement, but Saudi Arabia will certainly advise him against doing so.
Prince Mohammed arrives for a meeting at the White House on Tuesday to kick off a week in Washington D.C. before heading to NY.
The prince is on a public relations blitz while traveling in the United States, with stops in New York, Boston, Seattle, Los Angeles, San Francisco and Houston.