The Constitution defines treason in Article 3, Section 3, Clause 1:
Treason against the United States, shall consist only in levying War against them, or in adhering to their Enemies, giving them Aid and Comfort. No Person shall be convicted of Treason unless on the Testimony of two Witnesses to the same overt Act, or on Confession in open Court.
The Constitution does not define bribery. It is a crime that has long existed in English and American common law. It takes place when a person gives an official money or gifts to influence the official’s behavior in office. For example, if defendant Smith pays federal Judge Jones $10,000 to find Smith not guilty, the crime of bribery has occurred.
Whoever, owing allegiance to the United States, levies war against them or adheres to their enemies