The Findlay-based midstream energy operator simultaneously issued a qualified tax notice regarding foreign holdings. Under current Treasury regulations, brokers and nominees acting for non-U.S. investors must treat the entirety of these distributions as income effectively connected to a United States trade or business. Consequently, these payments are subject to federal income tax withholding at the highest applicable rate, with nominees serving as the responsible withholding agents. MPLX, a large-cap master limited partnership, manages a broad portfolio of energy infrastructure including crude oil pipelines, storage caverns, and natural gas processing facilities across key domestic supply basins.