(CNN) President Donald Trump's threat to delay the census following a Supreme Court ruling that could impact who controls Congress has Democrats wondering how to respond, a Democratic aide told CNN.

The court on Thursday blocked the administration from putting a question on the 2020 census asking about citizenship for the time being. Critics argued in court that the question is an attempt to intimidate noncitizens and Hispanic households and will lead to a decline in response rates and underrepresentation of minorities, who typically vote Democratic.

"I have asked the lawyers if they can delay the Census, no matter how long, until the United States Supreme Court is given additional information from which it can make a final and decisive decision on this very critical matter," he said in a pair of tweets at 2:30 a.m. local time while in Osaka, Japan.

"Can anyone really believe that as a great Country, we are not able the ask whether or not someone is a Citizen," Trump wrote. "Only in America!"

On Capitol Hill, Democratic committees held a coordination call late Thursday afternoon, according to the aide, after Trump weighed in on the census decision for the first time.

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