This episode's headline: Unfair Change?; Russian Gridlock; Songs of My People. The guests include SEN. DANIEL PATRICK MOYNIHAN, [D] New York; GAIL R. WILENSKY, Deputy Assistant to the President; THERESA FUNICIELLO, Welfare Advocate; CHARLES MURRAY, American Enterprise Institute; CORRESPONDENTS: DAVID IVERSON; IAN WILLIAMS; CLARENCE PAGE. Byline: In New York: ROBERT MacNeil; In Washington: JAMES LEHRER