In fiscal year 2004, 1483 Chinese (as in Red China) nationals were detained by the Border Patrol... just in the Rio Grande Valley sector. The report doesn't mention the numbers for other sectors in Texas, only saying that it's small. And, it doesn't mention the figures for other states. But, only 49 were detained last fiscal year in that same area. And:

Federal figures show that the American government has consistently granted asylum to between 600 and 900 Chinese nationals each year for the past five years.

And, from this:

FAIR Comment: The article notes that the U.S. government has consistently granted asylum to between 600 and 900 Chinese nationals each year for the past five years, but does not report that number will rise dramatically as a result of the ceiling for such claims being removed by Congress earlier this year.