The Alabama Senate Wednesday overwhelmingly approved a bill requiring college student-athletes to play on teams corresponding to the gender listed on a person's birth certificate. The vote was 26-4. The bill prohibits a biological male from participating on an athletic team or sport designated for females, and likewise bars a biological female from participating on an athletic team or sport designated for males. Supporters, including Sen. April Weaver (R-Brierfield), said the bill is aimed at protecting women athletes from unfair competition by biological males. "They are bigger than women. They are stronger. They're faster. They have larger hearts, denser bones, stronger muscles," Weaver said. The bill's sponsor, Rep. Susan DuBose (R-Hoover), made similar arguments when the House overwhelmingly passed the bill last month. The measure was amended in the Senate, sending it back to the House.