If the president of the United States is knowingly making a profit from the actions of a government employee and they do not interfer, then yes they should go to jail. The line is murkier when someone is just doing a bad job, but if someone is knowingly making money from illegal behavior they can easily put a stop to they should go to prison.
> If the president of the United States is knowingly making a profit from the actions of a government employee and they do not interfer, then yes they should go to jail.
This would be a great argument for abolishing the IRS.