The problem is that interstates don’t fall under anything in the Constitution’s Section 8 of Article I. So Eisenhower needed to first lead Congress to successfully propose an interstate highway amendment to the Constitution to the states before signing such a bill imo.
“The problem is that interstates don’t fall under anything in the Constitution’s Section 8 of Article I. So Eisenhower needed to first lead Congress to successfully propose an interstate highway amendment to the Constitution to the states before signing such a bill imo”
That is incorrect The interstate system is what they uses to call a “Post Road”.
Many of theses roads were built or established in colonial times to permit commutation and trade. Some of them still retain their original name such as the Boston Post Road:
http://en.wikipedia.org/wiki/Boston_Post_Road
The power exist is Article 1 Section 8:
“To establish Post Offices and Post Roads;”
What is interesting about this particular post road power is that it is an addition to the original articles of Confederation.
Federal courts early on have broadly interpreted post roads to include almost any road.