I have a particular opinion about this. However, I must preface that opinion with one statement.
These people are being paid to generate letters to political leaders from the largest body of individuals possible, by any means necessary, excluding the breach of prosecutable laws. They are doing a spectacular job and should get paid lots of money for following the rules of the system and simultaneously getting the job done in fine form.
THAT said,
This behavior is reprehensible and smacks of fraud, deception, misinformation, false advertising, political malpractice, and uncountable ethical violations. That it is legal remains quite a shock to me. It sounds like something that should carry a punishment of stoning, or at least a very harsh discussion concerning the horizontal inclinations of their mothers.