Trump pleaded not guilty to the 37-count indictment at an arraignment last month.
An aide,Walt Nauta, pleaded not guilty at his arraignment last week.
Nautas attorneys also are urging a postponement of the trial date.
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Mr. Nautas job requires him to accompany President Trump during most campaign trips around the country.
This schedule makes trial preparation with both of the Defendants challenging.
The charges have to do with Trumps retention ofclassified documentsafter he left the White House.
Prosecutors claim that even after he was issued a subpoena, Trump withheld the material.
The documents included highly classified secrets, including those related to nuclear capabilities.
The trial is scheduled to take place in Fort Pierce, FL.
A pre-trial conference is scheduled for July 18.
