limited benefits to a Tier 1 participant. (c) Guidelines Not later than 180 days after the date of the enactment of this subtitle, the Commissioner of U.S. Customs and Border Protection shall update the guidelines and criteria for certifying a C–TPAT program participant’s security measures and supply chain security practices under this section. Such guidelines shall include a background investigation and review of appropriate documentation, as determined by the Commissioner. (d) Timeframe To the extent practicable, the Executive Assistant Commissioner shall complete the Tier 1 certification process within 90 days of receipt of an application for participation in the C–TPAT program. 216. Tier 2 participants (a) Validation The Executive Assistant Commissioner shall validate the security measures and international supply chain security practices of a Tier 1 C–TPAT program participant in accordance with the guidelines referred to in subsection (c) to validate such participant as a Tier 2 participant. Such validation shall include on-site assessments at appropriate foreign and domestic locations utilized by such Tier 1 participant in its international supply chain. (b) Benefits for Tier 2 participants The Executive Assistant Commissioner, shall extend benefits to each C–TPAT participant that has been validated as a Tier 2 participant under this section. Such benefits may include the following: (1) Reduced scores in U.S. Customs and Border Protection’s Automated Targeting System. (2) Reduced number of security examinations by U.S. Customs and Border Protection. (3) Priority examinations of cargo. (4) Access to the Free and Secure Trade (FAST) Lanes at United States ports of entry. (5) Recognition as a trusted trade partner by foreign customs administrations that have signed Mutual Recognition Agreements with U.S. Customs and Border Protection. (c) Guidelines Not later than 180 days after the date of the enactment of this subtitle, the Commissioner shall develop a schedule and update the guidelines and criteria for