On some things, Secretary of State George P. Shultz refuses to budge. He is again expressing opposition to legislation that would require lie detector tests, this time for diplomatic security officers seeking to obtain or keep top secret clearances.

In a letter to House Foreign Affairs Committee Chairman Dante B. Fascell (D-Fla.) released yesterday, Shultz said that use of lie detectors as "a routine condition for employment is, in my view, wholly unacceptable."

Allowing one category of employes to submit to tests "undoubtedly would become an opening wedge that would lead eventually to an across-the-board mandate for intimidation," Shultz said.

McLaughlin Sworn In . . .

With President Reagan at her side, Ann Dore McLaughlin was sworn in yesterday as the second woman in U.S history to serve as the secretary of labor. She took the oath of office from Judge Gerard Riley as her husband, commentator John McLaughlin, held the Bible.

Frances Perkins was nominated by Franklin D. Roosevelt in 1933 as the first woman in the Cabinet. The new labor secretary said yesterday she hopes to broaden public understanding "that women running the government's business is business as usual."

Specter for Kennedy . . .

On the Hill, Republican Sen. Arlen Specter (Pa.) took himself out of the swing-vote category yesterday. He endorsed Supreme Court nominee Anthony M. Kennedy, calling him "a man of intellect with sound values."

Specter, who voted against Reagan's first nominee, Robert H. Bork, made an obvious comparison in his floor speech. Kennedy "does not wear an ideological straitjacket," Specter said, "but has demonstrated judicial restraint in sharply limiting his opinions to the narrow issues of the cases without legis- lating. His opinions, speeches

and answers show a capacity for growth . . . . "

TVA Nominee Passes . . .

Marvin T. Runyon won approval from the Senate Environment and Public Works Committee yesterday to become chairman of the problem-plagued Tennessee Valley Authority. The vote was 12 to 1, with Sen. John Breaux (D-La.) as the naysayer. He said that Runyon, president of Nissan Motor Manufacturing Corp. USA, has a "fatal defect": no experience with nuclear power or flood control. "TVA should not be on-the-job training for the chairman," Breaux said.

Grant S. Green Jr., executive secretary of the National Security Council, is following the boss. He joins Defense Secretary Frank C. Carlucci at the Pentagon as assistant secretary for force management and personnel.

Commerce Secretary C. William Verity has announced the appointment of Susan M. Borches as director of public affairs. Borches worked for Sen. John W. Warner (R-Va.) during his 1978 election campaign and was a founding partner of Soloway Associates Inc., a public affairs firm.

At the Heritage Foundation, Roger A. Brooks has been named director of the Asian Studies Center.

He departs the State Department, where he was director of the policy planning staff of the Bureau of International Organization Affairs and an aide to former assistant secretary Alan L. Keyes. Based on staff reports and news services