NEW YORK (AP) — For as long as Mexicans have gone north to find work, money has gone in the opposite direction. Remittances from expatriates have been the life blood of many Mexican villages. But these days, fear accompanies the money that crosses the border. And it travels both ways. Those who went to live in New York and other American cities are worried about how to keep supporting their families. They also send home warnings about the virus. And those who stayed in Mexico fear for their relatives in the north, watching from afar as they lose their jobs, fall sick — and, too often, die.