The loosing of export rules on items such as tanks and other military vehicles is expected to be complete before the end of 2012.

Company officials had complained to Mr. Clinton over dinner about export rules.

Privacy advocates also said that the export rules deprived Internet users of the most advanced technologies for keeping their data and communications safe.

Under current export rules, since the casket had left Britain within the last 50 years, it would automatically be allowed to leave the country again.

Currently, the nation's export rules allow export of data-scrambling technology using keys of 40 bits or fewer.

For details of other sector-specific export rules, see the page in this guide on specific regulations for the export of creative and media goods.

The software industry has long argued that the export rules put American companies at a great disadvantage relative to foreign competitors not under such restrictions.

Administering the export rules is very sensitive because of opposing positions taken by the business community and the Pentagon.

They also say that strict export rules are increasingly hindering the ability of United States corporations to compete with foreign suppliers.

Mr. Nishihara noted that American companies have also violated export rules.