Florida Senator Marco Rubio (R) has called on Attorney General William Barr to investigate former Secretary of State John Kerry for meeting with Iranian officials after leaving office–a potential violation of the Logan Act.

Fox News reports:

In an open letter posted on his Twitter page, Rubio urged the DOJ to determine if Kerry’s “recent actions related to the Joint Comprehensive Plan of Action with Iran” was a violation of the Logan Act or the Foreign Agents Registration Act – a federal law which prohibits private citizens from negotiating on behalf of the U.S. government without authorization.

Today I urged the DOJ to investigate whether former Secretary of State John F. Kerry’s actions since leaving office related to the #Iran nuclear deal violate the Logan Act or FARA –> https://t.co/yxq4O2bmke pic.twitter.com/V52wxcd5mL — Senator Rubio Press (@SenRubioPress) May 13, 2019

Last week, President Trump said Kerry was sabotaging U.S. talks with Iran.

“John Kerry tells them not to call,” Trump said. “But John Kerry violated the Logan Act. He’s talking to Iran and has been, has many meetings and many phone calls. And he’s telling them what to do.”

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A Kerry spokesman told CNN that Trump was “simply wrong” in his accusations.

“He’s wrong about the facts, wrong about the law, and sadly he’s been wrong about how to use diplomacy to keep America safe,”