World Leaders Hit Rome to Toast Tax Deal That’s Far From Done

Global heads of government including President Joe Biden will endorse a historic revamping of international corporate tax rules when they gather in Rome this weekend, though they have a long way to go to make the plan a reality.

Multi-country negotiations over important aspects of the plan remain unfinished. And the details that won’t emerge for many months may determine whether the U.S. Congress approves or rejects the deal, a decision that could make or break it internationally.

As they prepared to head for Rome, Treasury officials reiterated their optimism that the deal would ultimately attract bipartisan support among U.S. ...