London ? Britain’s chief law-enforcement official will call on European leaders today to put biological data into passports, visas and identity cards, share airline passenger lists and retain telecommunications records to help fight international terrorists and organized crime.

Concerns for safeguarding liberties must be weighed against the right of law-abiding people to be protected from crime and terrorist attacks, Home Secretary Charles Clarke will argue, according to an advance text of his remarks released to reporters before his address to the European Parliament in Strasbourg, France.

The British proposals to the EU come during a time of heightened fear of terrorism in Europe following the July 7 bombings of the London transport network. Yet they also coincide with growing public doubts about the merits of further European integration; this spring voters in France and Holland rejected a proposed European constitution.