Maslin-Kammerdeiner parlayed her NCAA title success into a tryout for the US National Team, then coached by Anson Dorrance, who was head coach at North Carolina, the team Maslin's GMU Patriots had beaten in the 1985 Championship. She was selected to, and played for the United States women's national soccer team from 1988 to 1991, with 17 National Team appearances (caps) in that time frame, recording nine shutouts, including her first 843 minutes of her international career without allowing a goal – a record that still stands. In 1991, she was the starting goalie for the US National team for much of the World Cup qualifying period, but lost her starting job shortly before the 1991 World Cup after losing some pre-World Cup exhibition games. She became the back-up goaltender on the US team that won the first Women's World Cup in China.