WASHINGTON (AP) — The White House plans to privately negotiate a massive overhaul of the tax system with Republican leaders in Congress, possibly giving rank-and-file members little if any say over the finished product.

Gary Cohn, Trump’s top economic aide, says the administration doesn’t want to engage in prolonged negotiations after the package is made public this fall. Cohn says the goal is to release the overhaul in the first two weeks of September.

In April, the administration unveiled a one-page proposal that called for massive tax cuts for businesses and a bigger standard tax deduction for middle-income families, lower investment taxes for the wealthy and an end to the federal estate tax for the superrich — like the president and his family.