Sen. Ted Cruz (R-TX) led several other senators this week in a letter to Twitter demanding that the social media platform cut ties with Iran and ban its leaders from the website.
The platform currently allows both Iran's Ayatollah Ali Khamenei and Foreign Minister Javad Zarif to have accounts on the website.
The letter said that Twitter is violating sanctions laid down by President Trump by allowing the leaders to stay. The sanctions prevent providing goods and services, as well as technological support.
"A Twitter account is a service," they said in their letter. "We therefore call on you to comply with those sanctions by ceasing the provision of services to Khamenei, Zarif, and any other designated Iranian entity."
Twitter declined to comment, according to The Washington Times.
The senators said they also sent the letter to President Trump, the Treasury and Justice Department, and the U.S. attorney in the Northern District of California, where Twitter's headquarters are located.