Wagner act: named after the bill"s sponsor, senator robert f. wagner of new york, and more formally known as the national labor relations act of the u. s. Unions achieved legal recognition in the trade union act of 1872. In the u. s. , the cause of industrial unionism was advanced by the 1932 election of. Snider case: a landmark court case in 1925 that determined that labor matters fell under the purview of the provinces under the british north america act. In this case the employer refused to get the labor board involved in the dispute between the company and its employers, since the conciliation board was under the federal statute and not the provincial statute. Instead, the snider care went to the british privy council, the higher court in canada at that time. After everyone went against the work conditions and the movement threatened the survival of the liberal party, pm william lyon mackenzie king enacted p. c.