Here's one example of socialism in the USA, the transportation system called "the freeway".
That is not socialism. That is just public spending. Socialism is an economic system characterized by public ownership of means of production. ...
What is the boundary between (1) public spending and (2) public ownership of means of production? Derec, it seems to me that you are saying that roads are not socialist because you like them.
Governments own nearly all general-access roads. Privately-owned roads do exist, but those are almost all access roads on property. So general-access roads are almost all socialist roads, because government ownership of them is public ownership of the means of production of a service: providing places to travel on.
Likewise, government military and police forces are public ownership of the means of production of another service: protection. Government court systems are likewise, for arbitration, and government-owned jails and prisons are also likewise, for detention and punishment.