Wilfredo Lee / AP

Minutes after President Trump tweeted that he and Vladimir Putin discussed forming an "impenetrable Cyber Security unit" to guard against election hacking and "many other negative things," Republican Sen. Marco Rubio responded with some tweets of his own:

While reality & pragmatism requires that we engage Vladimir Putin, he will never be a trusted ally or a reliable constructive partner.... Partnering with Putin on a "Cyber Security Unit" is akin to partnering with Assad on a "Chemical Weapons Unit."

Sen Lindsey Graham added on Meet the Press: "It's not the dumbest idea I've ever heard, but it's pretty close."

What to watch: It will be interesting to see how many other Republicans criticize Trump over his willingness to cast aside the election interference and work with Putin. Most would probably rather avoid the topic, but that will be increasingly difficult to do.

Read more on Trump's Sunday surprise

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Coronavirus dashboard

Illustration: Sarah Grillo/Axios

  1. Global: Total confirmed cases as of 12:45 p.m. ET: 30,838,610 — Total deaths: 958,090— Total recoveries: 21,088,552Map.
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Updated 1 hour ago - Health

7 states set single-day coronavirus case records last week

Data: Compiled by Axios; Map: Danielle Alberti/Axios

Seven states set new highs last week for coronavirus infections recorded in a single day, according to the COVID Tracking Project and state health departments. Wisconsin and Nebraska surpassed records set the previous week.

Why it matters: Problem spots are sticking in the Midwest, although the U.S. is moving in the right direction overall after massive infection spikes this summer.

Murkowski says she opposes voting on Ginsburg replacement before election

Photo: Greg Nash/Pool/Getty Images

Sen. Lisa Murkowski (R-Alaska) said in a statement Sunday that she opposes holding a Senate confirmation vote on President Trump's nomination to replace Supreme Court Justice Ruth Bader Ginsburg before the election.

Why it matters: Murkowski joins Sen. Susan Collins (R-Maine) as one of two Republican senators who have thus far said that they do not support rushing through a confirmation vote before November. Two more defections would likely force Senate Majority Leader Mitch McConnell (R-Ky.) to resort to holding a vote in the lame-duck session, which neither Murkowski nor Collins have addressed.