On top of that $100 billion in matching funds, the Trump proposal will allocate $50 billion for block grants to governors for rural projects; $20 billion to expand existing federal infrastructure loan programs; $20 billion for “transformative projects” (that is, new technology); and $10 billion to start a new “Federal Capital Revolving Fund.” This additional spending would be added on top of existing federal infrastructure programs, which the White House is quick to point remains a relatively small proportion of total infrastructure spending, which is mostly funded by states and local governments.

But where will the $200 billion come from? The White House hasn’t been too forthcoming with details about what existing appropriations may be cut to pay for it—or if the the spending is entirely new. The answer to that will help determine whether the proposal can get enough votes from congressional Republicans, who are wary of increasing spending on infrastructure.