Hillary Clinton voted in support of burning the flags of veterans' children

Or at least she cannot sue a rival campaign if it makes such a claim.

The Washington State Supreme Court has found that politicians have a constitutional right to lie.

(It is still illegal to libel, but libel is defined extremely narrowly in the US. It is not enough to make a false statement of fact, it is not even enough if this is done with malice. It must, in addition, cause harm to the reputation of the victim.)