Because you're unable to understand US Law.
You can have a different Constitution by amending the present one.
Stop whining and get to work.
Honey, the separation of powers, checks and balances, and protections against conflicts of interest under the Constitution have already been BYPASSED by Corporations that abuse both individual rights and collective influence/authority/resources AT THE SAME TIME.
The legal and legislative systems have been bought out and corrupted because of this monopoly tied in with lawyers/judges that there is not enough check on.
Wake up. We might be able to clarify and add laws to check these Corporations and the legal system by requiring Corporations and large organizations to abide by the same Bill of Rights and Code of Ethics as govt when they apply to be licensed by govt to operate.
If we required the legal system to resolve conflicts by consensus where there was restitution paid to the victims and to taxpayers for the costs of resolving charges and claims, including restitution to taxpayers for govt abuses of authority and resources,
then maybe we could get out of the mess we're in.
Sitting around waiting for other people to fix things is letting Corporations continue to take advantage of the fact we are divided by party. So the first step is to quit that, so these third parties profiting from the conflict don't keep making money off problems and charging taxpayers for the cost.