President Bush has signed legislation that will require screening of all air and sea cargo, and will provide more money to cities deemed to be at high risk of a terrorist attack.

After signing the bill Friday and meeting with his advisers on counter-terrorism, Mr. Bush said his homeland security and counter-terrorism teams are doing everything they can to protect the country from what he called a "dangerous enemy."

The new measures carry out some recommendations made by the independent commission that investigated the September 11, 2001 attacks on the United States.

Those include a grant of $4 billion to be given to high-risk cities to upgrade transit security.  They also mandate screening of all U.S.-bound cargo on planes and ships within the next five years.

Some information for this report was provided by AP and Reuters.