Why did U.S. Steel shares surge after Trump merger backing? How will Trump's new tariffs impact Apple and competitors? What caused Target's major sales slump and job cuts? Why is Nvidia launching a cheaper AI chip for China? How did the big U.S. bond market react to GOP budget bill? What are the risks of Trump's 'Big Beautiful Bill' on economy? Why are crypto markets falling after Trump's tariff threats? How is AI reshaping JPMorgan's banking and wealth management? What caused the global outage on Elon Musk’s social platform X?