“Good! He certainly should.”
Theoretically, if Bob Mueller had a nano-gram of integrity, he would have pursued the same and let the chips fall where they may. Now a duly elected POTUS is being compelled to pursue justice via his own administration against those who committed crimes against his very person. The US used to be a non-banana republic; the demokraps have caused great harm to our institutions, and the GOP has enabled through acquiescence. This did not happen overnight.
True, this has been building up for decades. It has been growing explosively in the last decade though.