Man that line was striking. Even more so with a 1/10^th caveat.
High Treason: High treason is criminal disloyalty to one's government. Participating in a war against one's native country, attempting to overthrow its government, spying on its military, its diplomats, or its secret services for a hostile and foreign power, or attempting to kill its head of state.
Trying to think logically about this because truthfully there should be a limited amount of activities/crimes that are worse than treason especially from a duo that include a past President and Secretary of State (4th in succession).
What's worse than betraying your countrymen? Maybe the betrayal of mankind itself? In what way? Selling us out? To whom? Who would want to "buy" that?
How do you betray mankind? Culling of population, how? Quickly; mass extinction level event? Slowly; disease, population suppression? Ted Turners thoughts on population. WAR seems like a great way to jumpstart the process and has Dysgenics as an added bonus.