1. Short title This Act may be cited as the Advertising Middlemen Endangering Rigorous Internet Competition Accountability Act or the AMERICA Act . 2. Digital advertising trading transparency and competition The Clayton Act ( 15 U.S.C. 12 et seq. ) is amended by inserting after section 8 ( 15 U.S.C. 19 ) the following: 8A. Competition and transparency in digital advertising (a) Definitions In this section: (1) Brokerage customer The term brokerage customer means a person who has purchased or sold digital advertisements, or directly related goods or services, through a buy-side brokerage or a sell-side brokerage. (2) Buy-side brokerage The term buy-side brokerage means a person in the business of effecting transactions on digital advertising exchanges, including by offering software or services that assist in serving or displaying digital advertisements, for other buyers. (3) Digital advertisement The term digital advertisement means an advertisement that is served electronically over a computer network, including the internet. (4) Digital advertising exchange The term digital advertising exchange means a person who constitutes, maintains, or provides a marketplace for or facilitates bringing together buyers and 1 or more third-party sellers of digital advertisements, or for otherwise performing with respect to digital advertising the functions commonly performed by a digital advertising marketplace. (5) Digital advertising revenue The term digital advertising revenue means the greater of— (A) global revenue derived from or directly related to the operation of a digital advertising exchange, a buy-side brokerage, or a sell-side brokerage; (B) the sum of the clearing prices of all digital advertisements bought or sold from or through a digital advertising exchange; (C) the total value of the gross advertising spending managed by a buy-side brokerage