We know that teacher unions are among the most powerful interest groups in state politics, and we know that they spend more money than almost any other organization. (educationnext.org)
They were controlled by powerful interest groups who cared about things other than student learning. (educationnext.org)
Regulation of physical development for public safety will certainly lead to conflict with powerful interests in real estate and development. (dotearth.blogs.nytimes.com)