Japan and the United States concluded their first comprehensive dialogue on cyber defense on Friday after exploring new areas of cooperation, they said in a joint statement. During the two-day meeting in Tokyo, Japanese and U.S. officials also identified actions that governments and private-sector entities can take to secure critical infrastructure, and affirmed the application of "norms of responsible state behavior" in cyberspace, according to the statement.

China on Thursday warned that the United States was turning away major investment from the growing Asian economy after several high-profile firms faced obstacles on security grounds. Cui Tiankai, China's new ambassador in Washington, acknowledged that most investment in the United States was approved but said that Chinese companies keen to enter the world's largest economy were alarmed by several rejections.

By Richard Cowan (Reuters) - A bipartisan group of eight senators on Tuesday unveiled an outline of legislation to revamp U.S. immigration policy for the first time since 1986. The proposal has three overriding goals: to create a path to legal status and ultimately citizenship for millions of undocumented immigrants; to secure U.S. borders against illegal entry; and to make it easier for industry, particularly high-tech industry and agriculture, to hire workers from abroad when needed.

Bipartisan immigration legislation emerging in the Senate could prevent hundreds of thousands of immigrants in the U.S. illegally from ever becoming citizens, according to a Senate aide with knowledge of the proposals. The bill expected to be unveiled next week would bar anyone who arrived in the U.S. after Dec. 31, 2011, from applying for legal status and ultimately citizenship, according to the aide, who spoke on condition of anonymity because the proposals had not been announced. It also would require applicants to document that they were in America before Dec.