The House Ethics Committee has determined outgoing House Speaker Dennis Hastert and other Republican leaders were negligent in not shielding teenage pages from sexual advances by former Florida Congressmember Mark Foley. But the panel ruled that no lawmaker violated any House rules even though they knew for years that Foley was sending sexually explicit Internet messages to underage boys. The report concluded that Hastert’s chief counsel had been aware of Foley’s inappropriate behavior for nearly a decade.