The Texas native, 64, was cleared for full Senate approval in a 56-43 vote.
The vote came after Senate Republicans changed the rules in order to approve Mr. Trump’s nominees for health and treasury, despite a Democratic boycott.
Mr. Tillerson, who has never held political office, faced intense scrutiny over his ties to Russia.
As Mr. Tillerson was sworn by the vice-president in the Oval Office, the president told him: “Your whole life has prepared you for this moment.”
SOURCE: BBC News Online