Joe Biden should dismiss the Joint Chiefs of Staff chairman for allegedly betraying America, a Republican from Florida said on Sept. 14.

Sen. Marco Rubio (R-Fla.) is urging President Joe Biden to fire Gen. Mark Milley immediately after reports revealed that the chairman of the Joint Chiefs of Staff “contemplated” to commit treason and planned measures to limit then-President Donald Trump’s military orders following the Capitol Hill riot on Jan. 6.

“[The general] worked to actively undermine the sitting commander in chief of the U.S. Armed Forces, and contemplated a treasonous leak of classified information to the Chinese Communist Party (CCP) in advance of a potential armed conflict with the People’s Republic of China,” Sen. Marco Rubio (R-Fla.) said in an open letter to Biden. “These actions by Gen. Milley demonstrate a clear lack of sound judgement, and I urge you to dismiss him immediately.”

The senator cited parts of Bob Woodward’s and Robert Costa’s widely reported tell-all book “Peril,” which details Milley’s phone calls with People’s Liberation Army Gen. Li Zuocheng. The general felt compelled to speak with the foreign official after becoming worried about escalating tensions from military exercises in the South China Sea.

“Gen. Milley told his counterpart, ‘[Y]ou and I have known each other for now five years. If we are going to attack, I am going to call you ahead of time–it is not going to be a surprise,'” Rubio said.

In doing so the general could have breached confidentiality, and even committed treason.

“I do not need to tell you the dangers posed by senior military officers leaking classified information on U.S. military operations but I will underscore that such subversion undermines the president’s ability to negotiate and leverage one of this nation’s instruments of national power in his interactions with foreign nations,” Rubio said.

The Republican is also concerned that Milley could have “interfered” with procedures by which a “civilian commander-in-chief” can order a nuclear strike. The general allegedly instructed other military officials to delay Trump’s orders unless he is involved. Each military official was forced to make an oath to that effect.

“No matter what you are told, you do the procedure, you do the process, and I am part of that procedure,” Milley said according to the book. “Milley considered it an oath.”

Rubio slammed the behavior as “unacceptable at best.”

“At worst, [this conduct] would cause ambiguity which could lead to war,” Rubio said. “Gen. Milley has attempted to rationalize his reckless behavior by arguing that what he perceived as the military’s judgement was more stable than its civilian commander.”

The senator warns Milley’s behavior sets a worry precedent for insubordination.

“It is a dangerous precedent that could be asserted at any point in the future by Gen. Milley or others,” he said. “It threatens to tear apart our nation’s longstanding principle of civilian control of the military.”

The book also reveals Milley agreed with House Speaker Nancy Pelosi’s criticism of Trump being “crazy.”

“I agree with you on everything,” he said according to Breitbart.

Milley “decided he had to act” and instructed military service chiefs and then-CIA director to watch everything “all the time.” He also allegedly discovered Trump had signed an order to withdraw all U.S. troops from Afghanistan by Jan. 15, 2021. He openly called the decision an “end run.”