Plus the us constitution grants congress the power to “fix the Standard of Weights and Measures” in article 1, section 8. The official measure is exactly what

Plus the us constitution grants congress the power to “fix the Standard of Weights and Measures” in article 1, section 8. The official measure is exactly what measurement Canada isn’t supplying. If the us congress did want to impose a standard accuracy for dc fast chargers the weights and measures clause plus the commerce clause would give them all the authority they need without encroaching on states rights.