and how would that work, exactly? geostationary orbits are at a specific altitude (26K miles, IIRC) and only at the equator. Any low-orbit satellites would circle the globe faster than the rotation of the earth and not remain within the confines of the US. There would have to be thousands of satellites in orbit to ensure complete coverage over the US at any given time.
yes but elon is in the sat launch business AND the sat build business. many thousands of low cost sats in low orbit. coverage wouldnt be just for the us, its for the entire worlld.
small dishes pointed straight up. no fancy aiming necessary....