Order could have implications for bi-national same-sex couples
House Republicans criticize att'y gen'l for abandoning anti-gay law
Carney says president supports right of Congress to defend anti-gay law
Speaker taps Bush solicitor general to defend law
Lawmakers write to administration seeking executive action
Kerry and others write letter to DOJ, DHS
Justice Dept. files brief with Ninth Circuit
Justice Dept. files brief with First Circuit
Request made with California district court
Justice Dept. has 60 days to appeal decision
