US President Barack Obama and First Lady Michelle Obama
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US mourns Arizona shooting victims

10 January 2011 Last updated at 18:56 GMT

US President Barack Obama has led a nationwide tribute to the six people killed in a shooting in Arizona which left a congresswoman seriously wounded.

Representative Gabrielle Giffords remains in a critical condition but doctors say the swelling in her brain has stabilised.

The 22-year-old man charged in connection with the attack has appeared in court.

Mark Mardell reports.