On December 11, 2023, the I.R.S. issued Notice 2023-55 (the “Notice”), announcing the intention to issue proposed regulations addressing the interaction between the Pillar 2 GloBE Rules and specific U.S. tax provisions, including the foreign tax credit rules and dual consolidated loss rules. The issuance of this guidance is timely, as the I.I.R.’s of most countries took effect at the start of this year. The U.T.P.R.’s are scheduled to come online in 2025. In his article, Michael Bennett tracks the way Notice 2023-80 addresses GloBE model rules and the foreign tax credit. Topics include the application of the foreign tax credit rules in the U.S. to final Top-Up Tax, the Q.M.D.T.T. in general, how the application of the separate levy rules will apply to a foreign country’s I.I.R., U.T.P.R., and Q.D.M.T.T, and the interplay of the GloBE rules of B.E.P.S. 2 and the dual consolidated loss rules of U.S. tax law.