Whether the Espionage Act’s exclusion of prohibited publications from the mail violated freedom of the press or due process.
Holding
No. Congress could exclude the specified matter from the postal system without violating the First or Fifth Amendment.
Reasoning
Congress may decide what the federal postal system will carry. The Act did not forbid publication or transportation by other means; it withheld the use of the mail from material Congress had declared nonmailable.
The Postmaster General’s authority to make that determination without a prior judicial hearing did not itself deny due process. Administrative officials may exercise judgment in carrying out statutory duties, even when their decisions affect private interests.