Who Is Marco Rubio?

Marco Rubio is a Republican U.S. senator from Florida and a former presidential candidate, widely recognized for his expertise on foreign policy and national security. The son of Cuban immigrants, he rose through Florida politics to become Speaker of the Florida House before winning election to the U.S. Senate.

Within the Republican Party, Rubio has been cast at various times as both a traditional conservative and a voice for a newer, more populist right. His biography, rooted in the Cuban exile experience, shapes his views on authoritarianism abroad and opportunity at home, themes that appear frequently in his speeches and legislative work.

Foreign Policy and National Security Influence

Rubio is one of the GOP’s most visible figures on foreign affairs, advocating a muscular U.S. role in the world. He has consistently endorsed strong support for Ukraine against Russia, arguing that the conflict is a front line in a broader struggle between democratic and authoritarian systems and that U.S. credibility with NATO allies is at stake.

In the Middle East, Rubio is a staunch supporter of Israel and a critic of Iran and its regional proxies. He backs expanded security cooperation with Israel and tougher sanctions on Iran, while calling groups such as Hamas a direct threat to regional stability and U.S. interests. In Latin America, particularly Cuba and Venezuela, he promotes sanctions on authoritarian regimes and support for democratic movements, linking regional instability to migration flows, security challenges, and U.S. economic interests.

Domestic Agenda and Role in the GOP’s Future

On domestic issues, Rubio combines conventional Republican priorities such as lower taxes and deregulation with selective support for pro-family economic measures, including child tax credits aimed at easing pressures on working- and middle-class households. He presents this approach as a conservative answer to globalization, rising costs, and the decline of certain U.S. industries.

His stance on immigration has shifted from early support for comprehensive bipartisan reform toward a stricter, enforcement-first posture, reflecting changes within the Republican base. At the same time, Rubio remains engaged in debates over how the post-Trump GOP should balance populist instincts with long-standing commitments to U.S. alliances, free enterprise, and democratic institutions, ensuring his continued relevance in national political discussions.