DeSantis Calls for Ban on Cousin Marriages in Florida, Cites Cultural Concerns

Florida Governor Ron DeSantis has called on state lawmakers to prohibit marriages between cousins, making controversial statements linking the practice to cultural concerns during a recent Tampa signing ceremony. The Republican governor’s remarks come as Florida joins a broader national conversation about marriage laws and cultural integration.

The practice of cousin marriage, while relatively rare in the United States, has deep historical roots and remains common in many parts of the world. According to anthropological studies, approximately 10% of marriages globally are between cousins, with the practice being particularly prevalent in the Middle East, North Africa, and parts of Asia. In the United States, cousin marriages were common throughout the 19th century but began declining in the early 20th century due to changing social attitudes and emerging genetic concerns. Notable historical figures including Charles Darwin, Albert Einstein, and Franklin D. Roosevelt married their cousins, reflecting the practice’s former acceptance in Western society.

From a scientific perspective, genetic counselors note that while cousin marriages do carry slightly elevated risks for genetic disorders, the absolute risk remains relatively low. Studies indicate that first cousins share approximately 12.5% of their DNA, and children of first-cousin marriages have about a 4-6% chance of birth defects, compared to 3-4% in the general population. The American Society of Human Genetics has stated that the increased risk is comparable to that of a woman giving birth at age 41 rather than age 30. However, repeated cousin marriages across generations can compound genetic risks, which has led to public health concerns in communities where the practice is common.

The governor’s comments have reignited debates about marriage laws, religious freedom, and cultural practices in Florida. Legal experts note that any proposed legislation would need to navigate constitutional questions regarding equal protection and the fundamental right to marriage. Additionally, enforcement of such laws presents practical challenges, as states generally recognize marriages legally performed in other jurisdictions. The Florida legislature, which convenes for its regular session in March, has not indicated whether any lawmakers plan to introduce legislation addressing cousin marriages.