Washington and Brussels have both proposed solutions to facilitate cross-border access to data for law enforcement officials, but the issue has stirred up a hornet's nest.
French President Emmanuel Macron has called for reform of the Schengen system, which currently involves 26 countries: 22 EU countries, plus non-EU Norway, Switzerland, Iceland and Liechtenstein.
The imminent fall of the Islamic State's caliphate in Iraq and Syria has left many countries grappling with what to do with jihadists who want to return.
EU countries agree to intensify the fight against anti-Semitism and boost security for Jews throughout Europe, adopting a declaration acknowledging hatred against Jews "remains widespread".
EU ministers raise concerns about whether citizens' rights are protected in a bill aimed at speeding up investigators' access to email and other digital evidence.
EU countries have decided to move the headquarters of the bloc's anti-piracy patrols from London to the Spanish port of Rota on March 29, when Britain exits the EU.