"We're going to have a phenomenal tax reform, but I have to do health care first," Trump said in an interview that aired Wednesday on Fox Business.
Trump and the GOP House leaders last month canceled a planned vote on the American Health Care Act, which was the Republican plan to replace the Obama-era health-care law.
In the interview, Trump said his initial August deadline for a tax reform plan will be moved back, but he plans to complete both health care and tax reforms by the end of this year.
The president said he sees infrastructure "as part perhaps of the health-care plan." He added, "If I put that in Democrats are actually going to love the infrastructure plan."
Trump said he views getting rid of Obama-era business regulations and getting Supreme Court Justice Neil Gorsuch approved among his biggest accomplishments in his first 100 days in office.