Ken Lay surrenders: enneth L. Lay, the former chairman and chief executive of Enron, turned himself in to the Federal Bureau of Investigation in Houston today after he was charged on Wednesday in a sealed indictment by a federal grand jury examining the financial fraud that led to the collapse of the onetime energy giant. The charges are the culmination of almost three years of investigation against Mr. Lay, who has said he has done nothing wrong. The indictment was delivered by prosecutors to a federal magistrate and is expected to be unsealed today, when the specific charges will become known. "Nice of you all to show up this morning," Mr. Lay told reporters after he showed up at F.B.I. headquarters at dawn, according to The Associated Press. George Bush still at large.