In a political blow to Prime Minister Tony Blair, British lawmakers on Wednesday rejected tough anti-terrorism legislation that would have allowed suspects to be detained for 90 days without charge. The House of Commons vote was the first major defeat of Blair's premiership and raises serious questions about his grip on power. Blair had staked his authority on the measure and doggedly refused to compromise.Lawmakers, including 49 members of Blair's Labour Party, opted instead for a maximum detention period for terror suspects of 28 days without charge. Michael Howard, leader of the opposition Conservative Party, said Blair's authority had "diminished almost to vanishing point" and said he should consider resigning. "This vote shows he is no longer able to carry his own party with him. He must now consider his position," said Howard.