Cole Tomas Allen pleaded not guilty Monday to four felony charges involving an alleged plot to assassinate President Donald Trump [1], [2], [3].

The legal proceedings follow an alleged attempt to target the president during the White House Correspondents’ Association dinner. The case highlights the security challenges surrounding high-profile political events and the legal process for addressing threats against the U.S. executive branch.

Allen, 31, appeared before a federal judge in Washington, D.C. [1], [4]. During the hearing on May 11, 2026, the defendant entered his plea against the four felony counts [2], [3].

Legal representatives for Allen are seeking to disqualify specific prosecutors from the case. The defense said that certain prosecutors should be removed because they attended the dinner where the alleged plot was to take place [5].

The charges stem from an investigation into the events surrounding the dinner. Federal authorities said that Allen plotted to kill the president during the gathering, a claim the defense is now contesting in court [3], [5].

Court documents and the subsequent plea hearing mark the beginning of a formal judicial process to determine the validity of the assassination plot. The proceedings will now move toward the discovery phase as both the government and the defense prepare their evidence [2], [5].

Cole Tomas Allen pleaded not guilty Monday to four felony charges

This case underscores the stringent legal framework used to prosecute threats against the presidency and the procedural complexities of federal trials, such as the defense's effort to disqualify prosecutors based on potential conflicts of interest or presence at the scene of the alleged crime.