Why does ebay allow the use of the "us elogistics service corp" shipping scam?

Numerous ebay sellers are employing the "US Logistics Services Corp" scam to falsely represent that the items they're selling are located within the continental US, whereas they are actually being shipped or "drop shipped" from China. How can a major corporation such as ebay be unaware of this "painfully obvious" scam tactic ? This highly deceptive practice is a blatant disservice to ebay's customers.