The 90-day provision, passed as a compromise to immediate rejection of Clinton's certification of Mexico as "fully cooperative" in the war against drugs, brought several key Democrats back into Clinton's camp. They objected to the new version's strong criticism of administration drug policies.
Even if the Senate adopts the House resolution, yesterday's 251-175 vote fell far short of the two-thirds needed to override a presidential veto.
In Florida for a golfing weekend, Clinton issued a statement saying the vote was "the wrong way" to guarantee cooperation from Mexico. He said the Zedillo government has increased drug seizures, arrests, crop eradication and the destruction of drug labs.
"President Zedillo recognizes the enormity of the problem Mexico faces and he has been courageous in carrying this battle forward," the statement said. "He deserves our support - not a vote of 'no confidence' that will only make it more difficult for him to work with us and defeat the scourge of drugs."
Cosby was shot to death Jan. 16, while changing a flat tire on his Mercedes-Benz convertible near a freeway offramp in the hills above the city's San Fernando Valley.
Williams, who announced the arrests at a hastily called news conference, said the Cosby family had been informed three hours earlier. The chief did not release the names of the suspect or the others who were being questioned.
"We're not releasing any information on the reasons why (the arrest was made) at this time, but we are very comfortable, based on our work with the district attorney," Williams said.
He said Cosby family members were pleased by the development, which he credited to "a lot of hard work and a little bit of luck."
Following the brief news conference, the Cosby family issued a statement thanking the Los Angeles Police Department.
"We realize how tough it must have been on them every day. We felt certain and had every hope that they would find the suspect and that the process of jurisprudence would unfold," the family said.
Working with specks of the Mars rock, two groups at the California Institute of Technology and the University of Wisconsin demonstrated that globules in the rock grew at temperatures as balmy as boiling water, and never got hotter than 350 Celsius, a tolerable environment for life forms that like it hot.