Three House Democrats introduced a bill Wednesday prohibiting the U.S. from forming a collaborative cybersecurity initiative with Russia.

The No Cyber Cooperation with Russia Act, brought by Reps. Brandon Boyle (D-Pa.), Ted Lieu (D-Calif.) and Ruben Gallego (D-Ariz.), echoes a number of amendments to the National Defense Authorization Act that also sought to prohibit such cooperation with Russia.

The bill is in response to a proposal floated by President Trump.

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"Putin & I discussed forming an impenetrable Cyber Security unit so that election hacking, & many other negative things, will be guarded," Trump tweeted on Sunday.

The proposal worried many lawmakers and security experts, who believe Russia might use the project to scout out U.S. digital strategies and tactics.

Trump later backtracked, saying: "The fact that President Putin and I discussed a Cyber Security unit doesn't mean I think it can happen. It can't."

"President Trump has proposed plenty of dumb ideas in his first six months in office, but a cybersecurity partnership with Russia might be the very worst," Gallego said in a statement announcing the bill.

"Simply put, we would be inviting the fox into the hen house."