In a series of tweets yesterday, President Trump proposed "an impenetrable Cyber Security unit" with Putin "so that election hacking, & many other negative things, will be guarded and safe." The news came as a shock to just about everyone who got word of it, including congressional members of his own GOP party. Less than 24 hours later, Trump decided against it, tweeting: "The fact that President Putin and I discussed a Cyber Security unit doesn't mean I think it can happen. It can't-but a ceasefire can,& did!" Ars Technica reports: "It's not the dumbest idea I have ever heard, but it's pretty close," Senator Lindsey Graham, a Republican of South Carolina, said of the plan. Senate Republican Marco Rubio of Florida tweeted that "partnering with Putin on a 'Cyber Security Unit' is akin to partnering with [Syrian President Bashar] Assad on a 'Chemical Weapons Unit."' Treasury Secretary Steven Mnuchin said that Trump and the Russian president decided at a meeting during a Group of 20 nations summit in Hamburg, Germany, to embark on a joint "cyber unit to make sure that there was absolutely no interference whatsoever, that they would work on cyber security together." But on Sunday, after it was clear that the plan was going nowhere, Trump took to Twitter and said no deal. That didn't stop Rep. Don Beyer, a Democrat from Virginia, from introducing on Monday an amendment to the 2017 National Defense Authorization Act that would bar a US-Russian cyber accord. He said: "Donald Trump's proposal to form a 'cyber security unit' with Putin is a terrible idea that would immediately jeopardize American cybersecurity... Trump must acknowledge that Russia interfered in the 2016 election and take strong, meaningful action to prevent it from happening again in future elections."