According to the filing, he admitted his intention was not to threaten Trump but prevent Mr Morales-Reyes from testifying at his trial, which is scheduled for July.

Homeland Security Secretary Kristi Noem posted a picture of Mr Morales-Reyes’s face and the letter on social media, writing: “This illegal alien who threatened to assassinate President Trump is behind bars.”

When White House Press Secretary Karoline Leavitt was asked about Noem’s post and whether it would be corrected or removed, she referred questions to Homeland Security.

Noem’s post about Mr Morales-Reyes remains on X.

Although Mr Morales-Reyes is no longer accused of making the threats, a DHS statement said Mr Morales-Reyes would remain in custody.