白宫新闻秘书莱维特：每位共和党人都必须支持特朗普的税收法案，这至关重要。

Core Viewpoint - The White House Press Secretary Levitt emphasized the necessity for every Republican to support Trump's tax reform proposal, highlighting its critical importance [1] Group 1 - The tax reform proposal is positioned as a vital agenda for the Republican Party, indicating a unified front is essential for its success [1] - Levitt's statement suggests that the tax reform could have significant implications for the party's political strategy and economic policy [1]