For almost 200 years, the House of Representatives, part of the United States Congress, has barred lawmakers from wearing hats. But this year, voters in Minnesota elected Ilhan Omar to represent them in the House. Omar, who was born in Somalia and is Muslim, wears a scarf that covers her head. In answer, some political leaders are calling for a change to the rules so that lawmakers can wear religious headwear during official meetings. The proposed change would enable Omar to wear a headscarf on the House floor. It would also permit lawmakers to wear other kinds of religious headwear, such as kippahs. But it is unclear whether any current lawmaker would do so. The reason for the ban on hats is mostly related to ideas about respectful behavior. Currently, the rule appears alongside bans on smoking or using small computers, such as iPhones, while lawmakers are meeting publicly. But Democratic Party lawmakers have suggested a proposal to permit religious headwear.