CNN fired back on Saturday after Donald Trump Jr. Don John Trump'Tiger King' star Joe Exotic requests pardon from Trump: 'Be my hero please' Zaid Jilani discusses Trump's move to cancel racial sensitivity training at federal agencies Trump International Hotel in Vancouver closes permanently MORE claimed the network wouldn’t run a controversial immigration ad sponsored by Donald J. Trump for President, Inc., stating that it declined to run the advertisement because it was “racist.”

“CNN refused to run this ad... I guess they only run fake news and won’t talk about real threats that don’t suit their agenda. Enjoy. Remember this on Tuesday,” the president’s eldest son tweeted Saturday morning.

CNN refused to run this ad... I guess they only run fake news and won’t talk about real threats that don’t suit their agenda. Enjoy. Remember this on Tuesday. #vote #voterepublican pic.twitter.com/VyMm7GhPLX — Donald Trump Jr. (@DonaldJTrumpJr) November 3, 2018

The Twitter account for CNN Communications responded, saying the network’s editorial coverage has made it “abundantly clear … that this ad is racist.”

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“When presented with an opportunity to be paid to take a version of this ad, we declined. Those are the facts,” CNN wrote.

CNN has made it abundantly clear in its editorial coverage that this ad is racist. When presented with an opportunity to be paid to take a version of this ad, we declined. Those are the facts. — CNN Communications (@CNNPR) November 3, 2018

The president tweeted out the controversial new ad on Wednesday, which depicts a man accused of killing two police officers spewing profanities and threats while at trial in 2014.

The ad claims that Democrats allowed Luis Bracamontes back into the country after he was deported, but he was readmitted to the U.S. during Republican President George W. Bush's tenure.

The ad also shows images of the migrant caravan of Central American asylum seekers traveling toward the U.S.

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"Who else would Democrats let in?" The narrator asks.

Sen. Jeff Flake Jeffrey (Jeff) Lane FlakeJeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Republican former Michigan governor says he's voting for Biden Maybe they just don't like cowboys: The president is successful, some just don't like his style MORE (R-Ariz.) called the ad "sickening" and called on all Republicans to denounce it.

Democratic National Committee Chairman Tom Perez Thomas Edward PerezClinton’s top five vice presidential picks Government social programs: Triumph of hope over evidence Labor’s 'wasteful spending and mismanagement” at Workers’ Comp MORE blasted the ad as a divisive "dog-whistle."

"This has been Donald Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE's playbook for so long, and when they go low, we go vote," Perez said.

Trump has sought to push his immigration agenda in the days before Tuesday’s midterm elections in hopes of lifting Republican chances of building their Senate majority.