President Trump attacked ObamaCare on Thursday night, calling the health-care law a “disaster” and vowing to repeal and replace it after the GOP passes tax reform.

“ObamaCare premiums are going up, up, up, just as I have been predicting for two years. ObamaCare is OWNED by the Democrats, and it is a disaster,” Trump tweeted.

“But do not worry. Even though the Dems want to Obstruct, we will Repeal & Replace right after Tax Cuts!”

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ObamaCare premiums are going up, up, up, just as I have been predicting for two years. ObamaCare is OWNED by the Democrats, and it is a disaster. But do not worry. Even though the Dems want to Obstruct, we will Repeal & Replace right after Tax Cuts! — Donald J. Trump (@realDonaldTrump) November 23, 2017

ObamaCare premiums have risen after Trump ended key subsidies to insurers that helped to cover costs for low-income Americans.

Trump’s promise to repeal ObamaCare comes as enrollment in the health-care law has unexpectedly surged since the start of the open enrollment period.

Nearly 2.3 million people signed up for coverage through ObamaCare exchanges during the first 18 days of the open enrollment period — outpacing the rate of enrollment that took place during the same time period under former President Obama.

Trump has repeatedly pushed for the GOP to repeal and replace ObamaCare. But the Republican attempt to repeal the law fell short earlier this year.

Republicans are now considering repealing the ObamaCare individual mandate in tax reform.