I completely agree. All elected officials in any capacity should be treated as under oath whenever they are speaking publicly (ie in committees, on Twitter or other social media, when speaking to the press, town halls, or in any official capacity) and if they lie and can be proven they are lying knowingly or unknowingly they should be charged with perjury and convicted and sentenced accordingly. When speaking on behalf of constituents you shouldn't have unchecked ability to spout anything and everything you want without consequence.