點解香港政府包庇美國逃稅犯張五常

He is currently wanted by the U.S. Government through Interpol.

By the time the arrest warrant was issued, he escaped back to the Mainland.

Since there is no direct agreement between Mainland and the U.S., as well as the Mainland and Hong Kong, as soon as he does not show up in Hong Kong, he is fine.

Hong Kong Government did not "protect" him but ran out of options.

這裏可以幫到你
http://aocnwiw.v50.host11.net/yahoo.com.hk/hk/auction/178987536