1. There is nothing in Obama's EO which is not already implemented in CA. If guns are already going from CA too Mexico, his new orders will do nothing to stop it.
2. Why is the solution to a problem in Mexico taking away the rights of US Citizens?
Because the 'problem in Mexico' is just an excuse to cover the real motive which is the taking away of US rights. I know that you know that but let me take the opportunity to riff F & F again.
Operation Fast & Furious had as its central purpose the subversion of the US Constitution. The program's strategy was to gin up a furor over guns sourced in the US being used in Mexican crime so that the US public could be stampeded into restricting the 2nd Amendment. Since few such guns were being used in Mexico more had to be supplied. They also had to show up at crime scenes so that they could be traced back to the US to 'prove' the Obama administration's assertions.
The GOP should be harping on one message every time F&F is mentioned. F&F was a program cynically designed to result in Mexican deaths - so that 'evil' US-sourced guns could be found at the crime scenes and US gun laws could be blamed for the carnage. Holder, Napolitano, Hillary and Obama and a host of their minions cooked up this program knowing that Mexicans would die - in fact, needing Mexicans to die for this scheme to work. The Obama administration was cynically willing to slaughter hundreds of Hispanics to accomplish their political purposes. The only "botch" in the scheme was F&F guns turning up to get Americans killed too.