Photo: The Canadian Press

The State Dining Room at the White House is set for the first State Dinner that President Donald Trump will host as president with French President Emmanuel Macron in Washington, Monday, April 23, 2018.

A sit-down between President Donald Trump and French President Emmanuel Macron followed by a joint news conference highlight the business portion of the French leader's second day in Washington.

The pageantry of Macron's official state visit, the first of the Trump presidency, comes Tuesday night with a lavish state dinner at the White House. About 150 guests are expected to dine on rack of lamb and nectarine tart and enjoy an after-dinner performance by the Washington National Opera.

Monday night was more relaxed, featuring a helicopter tour of Washington landmarks and a trip to the Potomac River home of George Washington with their wives for dinner. The presidents and their spouses hopped on a helicopter bound for Mount Vernon, Washington's historic riverside home, for a private dinner one night before the leaders sit down for talks on a weighty agenda including security, trade and the Iran nuclear deal.

"This is a great honour and I think a very important state visit given the moment of our current environment," Macron said Monday after his plane landed at a U.S. military base near Washington.

Macron's pomp-filled three-day state visit to Washington underscores the importance that both sides attach to the relationship: Macron, who calls Trump often, has emerged as something of a "Trump whisperer" at a time when the American president's relationships with other European leaders are more strained. Trump, who attaches great importance to the optics of pageantry and ceremony, chose to honour Macron with the first state visit of his administration as he woos the French president.

For all their camaraderie, Macron and Trump disagree on some fundamental issues, including the multinational nuclear deal, which is aimed at restricting Iran's development of nuclear weapons. Trump, skeptical of the pact's effectiveness, has been eager to pull out as a May 12 deadline nears. Macron says he is not satisfied with the situation in Iran and thinks the agreement is imperfect, but he has argued for the U.S. sticking with the deal on the grounds that there is not yet a "Plan B."

In a break with tradition, Trump has invited no congressional Democrats or journalists, said a White House official who was not authorized to discuss the arrangements publicly. But some Democrats did make the cut, including Louisiana Gov. John Bel Edwards, whose office confirmed his attendance.