True or False According to the Clayton Antitrust Act unions were illegal organizations similar to trust?

No.

The Sherman Antitrust Act of 1890, designed to protect society from corporate entities unfairly raising prices for consumers due to unfair competition. (Examples might include Andrew Carnegie, the Steel magnate who essentially could have set steel prices at any price he so chose, as there was no real competition to undercut his prices), was being applied to labor unions as organizations which were being said to unfairly raise the cost of labor, thus financially hurting the consumers.

The Clayton Act of 1914 was passed, in part, to clarify that "the labor of a human being is not a commodity or article of commerce. Nothing contained in the antitrust laws shall be construed to forbid the existence and operations of labor [unions]... nor shall such organizations... be held or construed to be illegal combinations or conspiracies in restraint of trade."

An interesting fact to be considered, a provision of the Clayton act (poor Wording) gave organizations the right to seek immediate injunctions to send striking/boycotting workers back to work. Prior to Clayton, the only way an injunction could be obtained was by a District Attorney. The Clayton Act could be argued to have been more damaging to labor unions than helpful!