[Southack]

"As for funding, federal funding of roads is unconstitutional."

That's incorrect. Building of national roads is itemized in our Constitution.

Article 1.
Section. 8.
Clause 7: To establish Post Offices and post Roads;

[Shalom Israel]

Building of national roads is itemized in our Constitution.

POST roads. It's a sizeable stretch to conclude that any and all road building is authorized.