Sen. Marco Rubio Marco Antonio RubioOvernight Defense: Pentagon redirects pandemic funding to defense contractors | US planning for full Afghanistan withdrawal by May | Anti-Trump GOP group puts ads in military papers Democrats step up hardball tactics as Supreme Court fight heats up Press: Notorious RBG vs Notorious GOP MORE (R-Fla.) on Thursday decried the Trump administration's deal to revive ZTE, warning that the Chinese telecommunications company is a "greater national security threat" than the steel or aluminum that is subject to new U.S. tariffs.

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"This 'deal' with #ZTE may keep them from selling to Iran and North Korea. That’s good. But it will do nothing to keep us safe from corporate & national security espionage. That is dangerous. Now Congress will need to act to keep America safe from #China," Rubio tweeted.

"I assure you with 100% confidence that #ZTE is a much greater national security threat than steel from Argentina or Europe," he added, taking a swipe at the administration's reasoning for imposing steep tariffs on U.S. allies.

This “deal” with #ZTE may keep them from selling to Iran and North Korea. That’s good. But it will do nothing to keep us safe from corporate & national security espionage. That is dangerous. Now Congress will need to act to keep America safe from #China — Marco Rubio (@marcorubio) June 7, 2018

I assure you with 100% confidence that #ZTE is a much greater national security threat than steel from Argentina or Europe. #VeryBadDeal — Marco Rubio (@marcorubio) June 7, 2018

The Commerce Department announced Thursday morning that it had reached a deal to lift penalties on ZTE, while implementing new guidelines for compliance.

“The purpose of this settlement is to modify ZTE’s behavior while setting a new precedent for monitoring to assure compliance with U.S. law,” the Commerce Department said in a statement.

The department in April banned American companies from selling components to ZTE because the Chinese firm violated U.S. sanctions by selling equipment to Iran.

The Defense Department had also banned the sale of ZTE phones and products near U.S. military bases over fears that the company’s technology could be used by the Chinese government for espionage.

However, the company was given new life in May when President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE tweeted that he was working with Chinese President Xi Jinping to help the company find “a way to get back into business, fast.”

Trump's willingness to aid the Chinese telecommunications giant drew criticism from lawmakers on both sides of the aisle.

Rubio was among those who expressed concerns that assisting ZTE would pose an economic and national security threat to the U.S.