Americans are growing increasingly unhappy with the country’s economy, its shrinking job opportunities, and its unaffordable housing market, according to recent polls —and a rising number of them are deciding to leave the nation. Last year, more people left the U.S. than arrived, according to a recent report by the Brookings Institution , marking the first time in 90 years the country recorded negative net migration . Net migration is expected to be negative this year as well, based on the