Gustavus A. Finkelnburg graduated from the Cincinnati Law School and began his legal career in St. Louis, Missouri. He served in the Missouri House of Representatives and later in the United States House of Representatives. Finkelnburg transitioned to the judiciary, being appointed to the United States District Court for the Eastern District of Missouri. His career reflects a commitment to public service and the legal system.

Gustavus A. Finkelnburg's political identity is marked by a blend of traditional fiscal conservatism and a progressive stance on immigration, reflecting a unique ideological agility. His military service and judicial career underscore a commitment to both national defense and the rule of law. Finkelnburg's nuanced approach to immigration, advocating for lawful entry while stressing integration, presents an intriguing tension between inclusivity and cultural cohesion.