Nope, the majority of leftists always blame the nearest conservative for leftist fuck-ups. Today, leftists blame Donald Trump for every single leftist fuck-up ever. It's totally absurd.
I'm glad I was able to inspire you to learn something.
Nope. The President's signature is merely an administrative step; the President gets no say in the content of any law and gets no vote over whether any law passes. However, this will not stop leftists, such as you, from using even a stupid administrative step to blame the nearest conservative for the egregious fuck-ups of leftists.
Please notice that you aren't fooling me.