The move sets the stage for an appeals court to review the rights of Guantánamo prisoners.
The decision will make it easier for local residents to recover damages from national firms, consumer groups say.
A growing feud between Ayman al-Zawahiri, Osama bin Laden's chief lieutenant, and Sayyed Imam al-Sharif, the jailed ex-leader of Egypt's Islamic Jihad, could weaken support for Al Qaeda.
The railroad regulation is one of the latest ‘midnight rule changes’ by the outgoing administration.
A new approach could represent a relatively easy first step down a generally more controversial path of engaging with America's adversaries.