"I'm not happy with what they're offering," the U.S. president told reporters.
The proposal from Tehran was submitted on Thursday evening, according to Iran's state-controlled IRNA news agency.
The content has not been made public.
White House Deputy Press Secretary Anna Kelly said in a previous statement, referring to Iran's proposal, that Trump "has been clear that Iran should never have access to nuclear weapons." She added that "negotiations continue to ensure that U.S. national security is maintained in the short and long term."
