Migrants from China ‘walk the line’ to U.S. border, testing Biden and Xi

LOS ANGELES - Lei Muhan and her parents crossed 11 nations along the journey from China to the United States, riding on the backs of motorcycles, paying off smugglers and trekking through a scorching desert.

The small California bedroom that now houses the family seemed a little dull by comparison. Muhan, 10, passed the time flipping through a spiral…