From the US Code,18 USC § 2381 - Treason
Whoever, owing allegiance to the United States, levies war against them or adheres to their enemies, giving them aid and comfort within the United States or elsewhere, is guilty of treason and shall suffer death, or shall be imprisoned not less than five years and fined under this title but not less than $10,000; and shall be incapable of holding any office under the United States.
From Art. 3, section 3 of the US Constitution:
“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.”
Obama’s whole foreign policy has been treason. He sided with and empowered (with arms and money) our enemy in the war on terror.