Now, If you'll keep your attitude to yourself you are right AND wrong.
South Carolina does not have a state statute on its books that regulates the interception of phone conversations. But, South Carolina case law indicates that when such issues arise in South Carolina courts, the courts will look to 18 U.S.C §2511.
The federal statute on the interception and disclosure of wire communications. Under 18 U.S.C. §2511(2)(d), it is lawful to intercept a communication if one is a party to the communication or has received the prior consent of a party to the communication. See Mays v. Mays, 229 S.E.2d 725, 726-27 (S.C. 1976) (finding that 18 U.S.C. §2511(2)(d) "makes it clear that one party to a telephone conversation may lawfully tape the conversation without the other's knowledge or permission and subsequently disclose [the conversation]."); Thompson v. State , 479 S.E.2d 808, 810-11 (S.C. Ct. App. 1996) (finding that taped telephone conversations between defendant and confidential informant did not violate 18 U.S.C. §2511 and the defendants right to privacy).
The entire chapter of 18 U.S.C.§2511 can be found here:
http://www4.law.cornell.edu/uscode/18/2511.html
Sec. 2511. - Interception and disclosure of wire, oral, or electronic communications prohibited
(2) (a) (e)
Notwithstanding any other provision of this title or section 705 or 706 of the Communications Act of 1934, it shall not be unlawful for an officer, employee, or agent of the United States in the normal course of his official duty to conduct electronic surveillance, as defined in section 101 of the Foreign Intelligence Surveillance Act of 1978, as authorized by that Act.
