He ran for Congress in 1982 and came up short against political legend Antonio Borja Won Pat. Under the slogan "Right Man, Right Now," Blaz defeated Won Pat in a rematch in 1984. He went to Congress as a Republican freshman and he was elected President of his class. He joined the Armed Services, Resources and Foreign Affairs Committees where he quickly established a reputation for a strong national defense and a strong commitment to the political development of Guam and the surrounding region. He established strong relationships and demonstrated a rhetorical style that resonated for years.