Who will control the robot army?

Tesla has committed to building 100m humanoids. The US military has about a million soldiers. It's a common question in the VC circuit, what would it take build hundreds of millions of humanoids? People are openly discussing building a private army 100x bigger than the US military.

Maybe the military will control them. But who in the military? Congress can declare war. The president can order a nuclear strike. But in the end there is a small group of people who actually press buttons to make a strike happen.

"Maybe it will require a cryptographic signature from devices held by multiple generals" etc. But then there will be nine magic rings of power, which if you seize physically, you are emporer of the world. Cryptocurrency has tried to turn human principles into hardware mechanics, but it always ends like a fantasy novel, with people digging through landfills for a magic harddrive or using hyponosis to try to remember a magic string of words. Any mechanic is too inflexible if the reward for hacking it is control of the world. Also, the generals can collude. Already the military can launch a coup, but it's impossible to hold the country without support of the people. Maybe 100m humanoids can.

This isn't an academic question. There are 300m cars in America. People are losing their mind about a law to force cars to detect drunk driving and stop. They don't want remote control. What if someone hacks the cars? What if 30% of cars abruptly stopped or started driving into critical buildings, infrastructure, etc.

In early 2025, there was a dispute about treasury payments, and everyone realized federal funding was controlled not by Congress, the president, the courts, etc. but by whoever had access to a particular terminal in an office building in DC that sent wires. For a time, some people didn't get paid because the people who physically controlled the terminal decided they shouldn't.

What is the solution?

1. The robots are benevolent dictators. They contain a respect for the constitution, etc. They are capable of conquering America but choose not to.
2. The democratic control of robots is hard control, not through the legal system. Everyone owns humanoids and no single swarm or cluster is capable of conquering America.
3. Other??

It's a fairly trite observation that modern democracy arose with the spread of firearms. Firearms equalized the peasant and noble on the field of battle.¹ The catalyst for the American revolution was a British attempted to seize a stockpile of artillery. The French revolution happened because the center of power in the French army shifted to the ordinary troops, who were peasants, rather than the mounted noble cavalry, because of firearms. Firearms were a paradigm shift in the military power dynamic, with widereaching political consequences. There may be a new paradigm.