President Barack Obama will host the last of four Nuclear Security Summits, starting this week. Critics say that these summits are no longer living up to their early promise of limiting nuclear proliferation.
The young man had attempted to cross into Syria along the southern border. He told officials he had made contact with the terrorist group online.
The disclosure is an effort to follow through on the Obama administration's 2013 promise to provide more transparency in its drone program.
Once in groups ranging from US white supremacists to Irish nationalists to European Islamists, these ex-extremists have formed a network to support each other as they try to help people avoid the errors they made.