Delaware Rep.-elect Sarah McBride has become the target of South Carolina Rep. Nancy Mace, who introduced a resolution to prevent trans women from using the women's restroom on Capitol Hill.

McBride, the first out transgender person elected to Congress, will serve in the House starting next year, and Mace doesn't want her using women's bathrooms at the Capitol.

Republican Rep. Nancy Mace introduced legislation to ban trans women from using single-sex bathrooms on Capitol Hill, targeting Rep.-elect Sarah McBride, the first openly trans member of Congress. Here's what the bill says and what the reaction has been.