There are over 900 comments to the Executive Order article on Yahoo. Here is one that summarized the purpose of the order:

Posted 2 days ago

For those who don't understand because counterfeits were already legal the issue was the seller was the only one really liable before and usually not worth going after. However now the hosting website like Amazon that allows 3rd party sellers can be held liable as well. It also likely ups the punishment for big e-commerce sites which before was pretty small fines overall but also pretty well protected them from criminal liability. Walmart.com also allows 3rd party sellers in a few dozen categories as well.