"which politician rose to national prominence for investigating alleged spy alger hiss

The politician who rose to national prominence for investigating alleged spy Alger Hiss is Richard M. Nixon.

Richard Nixon was one of the members of the House Un-American Activities Committee (HUAC) which was responsible for investigating allegations of communist activity in the U.S. during the early years of the Cold War.In the late 1940s, Nixon was determined to expose Alger Hiss, as a communist spy of the soviet union.

i'm not certain but i'm pretty sure it was spanish and portuguese america.