The Trump administration is eyeing a summer deadline to unveil the president’s $1 trillion infrastructure package.

Transportation Secretary Elaine Chao told the Boston Globe that the proposal will likely debut this summer, after the administration tackles tax reform. Chao has previously said the plan could land on Capitol Hill as soon as next month.

“We’re on track,” Chao said while touring the John A. Volpe National Transportation Systems Center in Cambridge, Mass. “There’s a great deal of discussion over the most difficult part of the initiative, which is funding it.”

{mosads}Congressional leaders initially said the legislation would take shape in the fall, but the timeline has been sped up as the administration looks to score a legislative victory.

President Trump said he is considering attaching his infrastructure proposal to tax reform or healthcare in order to attract more support for the latter of his legislative priorities.

While Democrats are unlikely to support ObamaCare repeal in exchange for infrastructure investment, a number of Democratic lawmakers support the idea of tying a rebuilding program to a tax overhaul.

Trump told The Associated Press that he would be releasing a tax plan as soon as Wednesday that will include a “massive tax cut” for businesses and individuals.