President-elect Donald J. Trump’s administration will reportedly adopt a “repeal and delay” strategy to phase out the Affordable Care Act (ACA), a government-subsidized healthcare system better known as Obamacare.

Republicans in the U.S. Congress are reportedly planning to act almost immediately next month to repeal Obamacare, as Trump promised during his election campaign. However, the Republicans will likely delay the effective date in order to get time to gradually phase out the program.

The so-called “repeal and delay” strategy was discussed by Speaker Paul D. Ryan earlier this week with Vice President-elect Mike Pence. It also indicated that repealing and replacing Obamacare will technically be quite complicated.

Rep. Kevin Brady, a Republican from Texas, “We are not going to rip health care away from Americans. We will have a transition period so Congress can develop the right policies and the American people can have time to look for better health care options.”

Apart from being technically complicated, repealing Obamacare could prove politically explosive as it has provided healthcare insurance coverage to as many as 20 million people, becoming deeply embedded in the U.S. healthcare system.