This week’s Closing Bell Brief covers volatile market action from May 26-39, 202, driven by President Trump’s tariff threats on the EU and legal changes to tariff authority. Some key highlights are NVIDIA’s amazing Q1 earnings despite China’s export restrictions, mixed retail earnings due to tariff’s, and the new “TACO trade” strategy. Also covered: Tesla’s falling European market share, GameStop's investment strategy, and the Trump-Powell Fed meeting.