French President Emmanuel Macron and European Commission President Ursula Von der Leyen attend the "Choose Europe for Science" event, to encourage researchers and scientists from all over the world to practice in Europe, at the Sorbonne University in Paris, Monday, May 5, 2025.(Gonzalo Fuentes/Pool via AP)French President Emmanuel Macron and European Commission President Ursula Von der Leyen attend the "Choose Europe for Science" event, to encourage researchers and scientists from all over the world to practice in Europe, at the Sorbonne University in Paris, Monday, May 5, 2025.(Gonzalo Fuentes/Pool via AP)French President Emmanuel Macron delivers his speech at the "Choose Europe for Science" event, to encourage researchers and scientists from all over the world to practice in Europe, at the Sorbonne University in Paris, Monday, May 5, 2025.(Gonzalo Fuentes/Pool via AP)French President Emmanuel Macron attends the "Choose Europe for Science" event, to encourage researchers and scientists from all over the world to practice in Europe, at the Sorbonne University in Paris, Monday, May 5, 2025.(Gonzalo Fuentes/Pool via AP)French President Emmanuel Macron and European Commission President Ursula Von der Leyen attend the "Choose Europe for Science" event, to encourage researchers and scientists from all over the world to practice in Europe, at the Sorbonne University in Paris, Monday, May 5, 2025.(Gonzalo Fuentes/Pool via AP)French President Emmanuel Macron welcomes European Commission President Ursula Von der Leyen as she arrives at the "Choose Europe for Science" event, to encourage researchers and scientists from all over the world to practice in Europe, at the Sorbonne University in Paris, Monday, May 5, 2025.(Gonzalo Fuentes/Pool via AP)French President Emmanuel Macron welcomes European Commission President Ursula Von der Leyen as she arrives at the "Choose Europe for Science" event, to encourage researchers and scientists from all over the world to practice in Europe, at the Sorbonne University in Paris, Monday, May 5, 2025.(Gonzalo Fuentes/Pool via AP)French President Emmanuel Macron delivers his speech at the "Choose Europe for Science" event, to encourage researchers and scientists from all over the world to practice in Europe, at the Sorbonne University in Paris, Monday, May 5, 2025.(Gonzalo Fuentes/Pool via AP)European Commission President Ursula Von der Leyen delivers he speech at the "Choose Europe for Science" event, to encourage researchers and scientists from all over the world to practice in Europe, at the Sorbonne University in Paris, Monday, May 5, 2025.(Gonzalo Fuentes/Pool via AP)French President Emmanuel Macron and European Commission President Ursula Von der Leyen attend the "Choose Europe for Science" event, to encourage researchers and scientists from all over the world to practice in Europe, at the Sorbonne University in Paris, Monday, May 5, 2025.(Gonzalo Fuentes/Pool via AP)French President Emmanuel Macron welcomes European Commission President Ursula Von der Leyen as she arrives at the "Choose Europe for Science" event, to encourage researchers and scientists from all over the world to practice in Europe, at the Sorbonne University in Paris, Monday, May 5, 2025.(Gonzalo Fuentes/Pool via AP)
French President Emmanuel Macron and European Commission President Ursula Von der Leyen attend the "Choose Europe for Science" event, to encourage researchers and scientists from all over the world to practice in Europe, at the Sorbonne University in Paris, Monday, May 5, 2025.(Gonzalo Fuentes/Pool via AP)