The Netherlands' highest court rejected Tuesday a gay Iranian asylum seeker's last-ditch bid to avoid deportation to Britain, where he fears authorities will send him back to Tehran and possible execution. In a ruling published on its Web site, the Council of State said Britain is responsible for Mehdi Kazemi's case, because it was there that the 19-year-old first applied for asylum. Gay rights campaigner Rene van Soeren said Kazemi's Dutch lawyer was considering an appeal to the European Court of Human Rights. The lawyer, Borg Palm, did not immediately return calls seeking comment. Boris van der Ham, a lawmaker who has taken up Kazemi's cause, has tabled questions in Parliament asking the junior minister for immigration, Nebahat Albayrak, to lobby British authorities on Kazemi's behalf.