The PGA Tour and LIV Golf have announced a merger that could test the differing approaches to merger control between the Trump administration and the European Commission. This unexpected agreement aims to unify golf globally, despite previous tensions between the two tours. The merger could impact competition in the golf market, with concerns about market concentration and consumer effects. The US Justice Department is reviewing the merger for potential antitrust violations, while the European Commission will assess its market power and innovation implications. Trump's support for the merger adds a political dimension to the proceedings.