Responsibility of individual representative
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Representatives may and should make open protest against decress of an assembly, or else be held responsible for the evil or irresponsible deeds of others.
It is manifest by this that in bodies politic subordinate, and subject to a sovereign power, it is sometimes not only lawful, but expedient, for a particular man to make open protestation against the decrees of the representative assembly, and cause their dissent to be registered, or to take witness of it; because otherwise they may be obliged to pay debts contracted, and be responsible for crimes committed by other men. But in a sovereign assembly that liberty is taken away, both because he that protesteth there denies their sovereignty, and also because whatsoever is commanded by the sovereign power is as to the subject (though not so always in the sight of God) justified by the command: for of such command every subject is the author.
Hobbes, Lev XXII 15
Representatives do not act on behalf of their represented bodies when they act outside the law.
And because such limitation is not always easy or perhaps possible to be described in writing, the ordinary laws, common to all subjects, must determine what the representative may lawfully do in all cases where the letters themselves are silent. And therefore
In a body politic, if the representative be one man, whatsoever he does in the person of the body which is not warranted in his letters, nor by the laws, is his own act, and not the act of the body, nor of any other member thereof besides himself: because further than his letters or the laws limit, he representeth no man's person, but his own. But what he does according to these is the act of every one: for of the act of the sovereign every one is author, because he is their representative unlimited; and the act of him that recedes not from the letters of the sovereign is the act of the sovereign, and therefore every member of the body is author of it.
Hobbes, Lev XXII 8-9
A debt incurred by an individual representative is not the responsibility of the whole body.
If the person of the body politic, being in one man, borrow money of a stranger, that is, of one that is not of the same body (for no letters need limit borrowing, seeing it is left to men's own inclinations to limit lending), the debt is the representative's. For if he should have authority from his letters to make the members pay what he borroweth, he should have by consequence the sovereignty of them; and therefore the grant were either void, as proceeding from error, commonly incident to human nature, and an insufficient sign of the will of the granter; or if it be avowed by him, then is the representer sovereign, and falleth not under the present question, which is only of bodies subordinate. No member therefore is obliged to pay the debt so borrowed, but the representative himself: because he that lendeth it, being a stranger to the letters, and to the qualification of the body, understandeth those only for his debtors that are engaged; and seeing the representer can engage himself, and none else, has him only debtor, who must therefore pay him, out of the common stock, if there be any, or, if there be none, out of his own estate.
If he come into debt by contract, or mulct, the case is the same.
Hobbes, Lev XXII 11-12