"When Congress seems slow to solve problems, it may be only natural that those in the Executive Branch might seek to take matters into their own hands. But the Constitution does not authorize agencies to use pen-and-phone regulations as substitutes for laws passed by the people’s representatives. In our Republic, “[i]t is the peculiar province of the legislature to prescribe general rules for the government of society.” Fletcher v. Peck, 6 Cranch 87, 136 (1810). Because today’s decision helps safeguard that foundational constitutional promise, I am pleased to concur." p56