Rep. Tim Ryan Timothy (Tim) RyanNow's the time to make 'Social Emotional Learning' a national priority Mourners gather outside Supreme Court after passing of Ruth Bader Ginsburg Lincoln Project hits Trump for criticizing Goodyear, 'an American company' MORE (D-Ohio) fired back Friday at President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE’s tweet that the U.S. could use some “good old Global Warming” to heat up the currently freezing East Coast, saying he was “grateful” that cities and states are working to combat climate change where Trump is not.

Global #ClimateChange is happening, with life and death implications for untold millions around the world. Tweet all you want, but I’m grateful the international community (and many US cities & states) are working together to provide leadership where the US President has not. https://t.co/ApE3Cf4dTT — Congressman Tim Ryan (@RepTimRyan) December 29, 2017

Ryan was responding to Trump’s Thursday evening tweet saying the U.S. "could use" some global warming as record-breaking cold weather blankets much of the country.

In the East, it could be the COLDEST New Year’s Eve on record. Perhaps we could use a little bit of that good old Global Warming that our Country, but not other countries, was going to pay TRILLIONS OF DOLLARS to protect against. Bundle up! — Donald J. Trump (@realDonaldTrump) December 29, 2017

Eastern and Great Plains states are expected to see record-breaking cold temperatures over New Year’s weekend, with some areas expected to have low temperatures in the negative 40s.

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Ryan joined a host of Democratic lawmakers who slammed Trump following the tweet. Sen. Elizabeth Warren Elizabeth WarrenHillicon Valley: Subpoenas for Facebook, Google and Twitter on the cards | Wray rebuffs mail-in voting conspiracies | Reps. raise mass surveillance concerns On The Money: Anxious Democrats push for vote on COVID-19 aid | Pelosi, Mnuchin ready to restart talks | Weekly jobless claims increase | Senate treads close to shutdown deadline Democratic senators ask inspector general to investigate IRS use of location tracking service MORE (D-Mass.) tweeted that the U.S. has a “moral obligation” to combat climate change, and Sen. Sheldon Whitehouse Sheldon WhitehouseThe Hill's Morning Report - Sponsored by Facebook - Trump previews SCOTUS nominee as 'totally brilliant' Feinstein 'surprised and taken aback' by suggestion she's not up for Supreme Court fight Hillicon Valley: Murky TikTok deal raises questions about China's role | Twitter investigating automated image previews over apparent algorithmic bias | House approves bill making hacking federal voting systems a crime MORE (D-R.I.) blasted Trump’s tweet as “embarrassing.”

Trump has denied that global warming exists in the past, claiming it was “created by and for the Chinese in order to make U.S. manufacturing non-competitive.”

In June, Trump announced the U.S. would withdraw from the Paris climate change agreement, a worldwide pact to cut back on carbon emissions to reduce global warming.

The U.S. is now the only country on Earth not part of the accord.

In response to Trump pulling the U.S. out of the Paris deal, a number of states and cities have announced their intention to honor the guidelines in the agreement independently.

On Wednesday, 10 more U.S. cities signed on to the Chicago Climate Charter, a now 67-city pact to fight climate change. The pact also includes leaders from Mexico City, Paris and Vancouver.