Migrants make their way through tall grass across a field towards the Eurotunnel on September 9, 2015, close to the French port of Calais. Britain’s Prime Minister David Cameron should offer to take in the 3,500 migrants camped in Calais as part of his plan to host up to 20,000 Syrian refugees, the French city’s mayor told British MPs on September 8. Thousands of migrants over the summer attempted to cross the Channel Tunnel between Britain and France, which later stepped up border controls. AFP PHOTO PHILIPPE HUGUEN