What constitutes an unfair or deceptive act or practice subject to enforcement under Section 5 of the Federal Trade Commission Act? In hopes of providing clarity, the commission released a statement of enforcement principles for Section 5 that, it says, draws on precedent to unite Section 5 with the Sherman and Clayton Acts. One dissenter, though, said the statement “provides more questions than answers, undermining its value as guidance.” Read on to see what the commission says it can do under Section 5.