This episode's headline: Ethiopian Famine Update; Mexico's Problems; No Pass, No Play; ""Show-Me"" Baseball. The guests include In New York: BERNARDO SEPULVEDA, Foreign Minister of Mexico; In Austin, Texas: Gov. MARK WHITE, Democrat, Texas; EDDIE JOSEPH, Texas High School Coaches; Association; Reports from NewsHour Correspondents: BRIAN STEWART (CBC), in Ethiopia; KWAME HOLMAN, in Texas; CHRIS CONNOR (WFAA), in Dallas, Texas; JIM FISHER, in Missouri. Byline: In New York: ROBERT MacNEIL, Executive Editor; In Washington: JIM LEHRER, Associated Editor