where does it say in any law of the land that we must vote at a fixed location

[getagrip_already]

4. Still there should be national standards similar to how reps are proportioned

Each voting district must maintain a ratio of voting machines to voter not to fall above x people per machine, voting centers shall be staffed to keep lines shorter than 1 hour wait time, water and aid will be made available to those waiting to vote, protestors and campaigners shall be kept well back from voters waiting to vote, etc.