Asked whether he planned to fight on for his proclaimed innocence, Sergeant Nightingale said he had to ask the question: "Realistically can we keep going?".
He said that he had concerns about the "longevity of the family".
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The bill is President Trump's first attempt at passing a big legislative piece through Congress.
Settled and sunny for most tomorrow, a little more cloudy on Sunday.
Residents from a town in East Sussex where the Westminster attacker once lived have described him as "intimidating" and "unpleasant".