As the clock ticked down to the Nov. 1 deadline Pakistan set for undocumented migrants to leave the country, Muhammad Rahim boarded a bus from Karachi to the Afghan border. "We'd live here our whole life if they didn't send us back," said the 35-year-old Afghan national, who was born in Pakistan, married a Pakistani woman and raised his Pakistan-born children in the port city - but has no Pakistani identity documents. The Taliban government in Afghanistan said some 60,000 Afghans returned between Sept 23 to Oct 22 from Pakistan, which announced on Oct 4 it will expel undocumented migrants that do not leave.