This is the lower house of the legislative branch at both the national and state levels

The House of Representatives.

Explanation:

The United States federal government is formed by three branches, executive, legislative and judicial. The legislative branch, at both the national and state levels, is formed by two houses. The upper house is the Senate, and the lower house is the House of Representatives. The members of this house must be at least twenty-five years old and are elected for a two-year period. This house can declare war.

well it depends i think people around the world are coming around to gay marriage. but if you are talking abortion then wow, so much to talk about. such as men thinking they have the right to choose if women can, the fact there are health concerns if the women can't get one, and many more arguments to discuss. so i would definitely say abortion would be a much more interesting topic.