The Civitas Dei Summer Fellowship, sponsored by the Institute for Human Ecology at The Catholic University of America and the Thomistic Institute at the Dominican House of Studies, offers competitive fellowships for graduate students (and a few advanced undergraduates) in the sciences, humanities, and law. Accepted fellows attend a fully-funded, week-long seminar in Washington, DC where, under the leadership of distinguished scholars, they engage core questions of culture and public life in light of Catholic thought.
More information here.