U-turns are regulated by the local (although, sometimes state) governments, so it is not universal.
That being said, a majority of jurisdictions do not allow the U-turn on any public roadway, for any reason.
Most jurisdictions consider it a traffic infraction, making the punishment a traffic ticket.
Cannabis extracts, prepared for medicinal application, are prohibited in the United States.
Wisconsin is part of the Union, and slavery is prohibited under Federal Law and the US Constitution. It may also be prohibited under the Wisconsin Constitution as well.
Powers prohibited to the federal (national) government under the US Constitution are called Denied powers.
(in the US) Double Jeopardy is prohibited by the US Constitution.
Manufacturing of alcohol I think.
The Embargo Act.
The Eighteenth Amendment
smoking is prohibited by us
No, former felons are prohibited from obtaining legal residence in the US.
There is no double jeapordy - in California, or anywhere else in the US. It is prohibited by the US Constitution.
There are no states that are prohibited from taxing by the U. S. Constitution. Such a prohibition may or may not be placed in the State's Constitution or Charter or such.
If it is, it's mostly in the segregated South.