How many Federal laws has the SCOTUS ever declared unconstitutional?

[Truth Warrior]

Just curious!

 

[pcosmar]

Good question,
The only one that comes to mind is the.
Marihuana Tax Act of 1937
http://en.wikipedia.org/wiki/1937_Marihuana_Tax_Act
(sited for ease of reference)

In 1969 in Leary v. United States, this act was found to be unconstitutional since it violated the Fifth Amendment, since a person seeking the tax stamp would have to incriminate him/herself.[5] In response the Congress passed the Controlled Substances Act as Title II of the Comprehensive Drug Abuse Prevention and Control Act of 1970[6]. The 1937 Act was repealed by the 1970 Act.

Found when looking into hemp farming.