👉 In the context of political science and law, a cosponsor is a person who supports or contributes financially to a bill that would be introduced in Congress. These sponsors can be individuals, corporations, or other entities, such as trade associations, labor unions, or government agencies. Cosponsors are often listed on bills that are being considered for passage by the House of Representatives or Senate, and they play a crucial role in shaping the legislative agenda and ensuring that the bill is fully debated and discussed. By supporting