WASHINGTON—Carlos Lamoutte and GianLuca Pasquotto listened intently as Vice President JD Vance spoke to a crowd of tens of thousands gathered on the National Mall on Jan. 24 for the 52nd National March for Life.

The seniors at Jesuit High School, an all-boys Catholic school in Tampa, Florida, traveled to the nation’s capital with more than 45 fellow members of the school’s pro-life club, which began sending students to the March for Life more than a decade ago.