By Alex Harring

Copyright cnbc

Sen. Elizabeth Warren served Rolex with a critical letter on Wednesday for hosting President Donald Trump at the U.S. Open, alleging that the Swiss company could be trying to sidestep tariffs slapped on its home country.

The Massachusetts Democrat said that Rolex’s actions mark the latest example of companies benefiting from their leaders’ relationships with Trump. She said the event warrants an inquiry into “whether you are taking a page from Apple and Nvidia’s playbook.”

“This invite … raises questions about whether you are cultivating a relationship with President Trump in attempts to secure lucrative tariff exemptions for Rolex products,” Warren wrote in the letter addressed to Jean-Frederic Dufour, the watchmaker’s CEO, that was shared exclusively with CNBC.

Both Nvidia and Apple have announced domestic investments since Trump returned to the White House in January. Trump invited technology sector CEOs to the White House for a dinner earlier this month.

Rolex, Apple and the White House did not respond immediately to CNBC’s request for comment. Nvidia declined to comment.

Warren’s letter comes weeks after Trump was spotted at Rolex’s midcourt box alongside Dufour during the U.S. Open men’s singles championship. The president was joined by family members and high-ranking administration officials including Treasury Secretary Scott Bessent and Press Secretary Karoline Leavitt, NBC News reported.