President Trump promised Monday to unveil his proposal for a massive infrastructure package as soon as Congress passes an overhaul of the tax code.

“We’ll be submitting plans on infrastructure … soon after taxes,” Trump said Monday at the White House.

The House passed its tax plan last week, though the timeline is less clear in the Senate. Republicans are aiming to pass both bills — and negotiate a final product — by Christmas.

With Congress making quick progress on taxes, administration officials recently began trading ideas with lawmakers about the infastructure effort, Rep. Sam Graves (R-Mo.) told The Hill last week. However, the process is still in the early stages, he added.