DUBLIN—U.S. Treasury Secretary Janet Yellen said she expected U.S. tech giants to broadly support the reallocation of taxing rights agreed to by nearly 140 countries as part of a broader deal on global taxes, saying the impact on U.S. companies should be minor. Yellen told Reuters on Sunday the support of the big global players should help foster bipartisan support among U.S. lawmakers for what is known as Pillar 1 of the tax deal negotiated by the Organization for Economic Cooperation and Development. Leaders of the world’s 20 biggest economies (G20) this weekend backed the overall OECD deal, which also calls for implementation of a global minimum corporate tax of 15 percent by 2023. Yellen said the minimum tax part of the deal would provide welcome certainty for large internet companies like Alphabet Inc’s Google, Amazon.com Inc., and Facebook Inc., by eliminating the complicated web of digital services taxes they …