They're not. But this doesn't excuse poor or illegal behavior on the part of republicans.
Not saying they should be excused, ONLY all corruption should be throughly, investigated and punished whether it is Democrat, Republican or any other party! Obviously, the Democrats have gotten away with a lot of it with not even a slap on the wrist! FBI, DOJ partial to allowing corruption from one party because of their political connections! Nobody should be above the law but, apparently, that is not the case!