The Duke and Duchess of Cambridge have arrived in New York for a tour of the east coast of the United States. The couple are in the country for three days, during which Prince William will meet President Barack Obama. Catherine, who is pregnant with the couple's second child, will accompany the duke to pay respects to those who died in the 9/11 terror attacks. Danny Lopez, the British consul general in New York, said there had been "incredible interest" in the visit. He added there has been a huge "level of excitement" from people in the city.