CNBC Daily Open: Potential Iran tariffs, data centers and tech comments

US President Donald Trump speaks during an announcement on the Freedom Haulers initiative at the White House in Washington, DC, US, on Thursday, July 30, 2026. Jim Lo Scalzo | Bloomberg | Getty ImagesHello, this is Justina Lee writing to you from Singapore. Welcome to another edition of CNBC's Daily Open.U.S. President Donald Trump wants Congress to add tariffs on Iran, which could further worsen Tehran-Washington relations as the Middle East conflict continues on. Over in the tech space, capital continues to flow with data centers being built by Nexus Data Centers and China's DeepSeek, while Amazon is projecting its own capital expenditures to hit $220 billion this year. What you need to know todayTrump is flexing his tariff powers again, and wants Congress to add them on Iran to a sanctions bill against Russia and Tehran that has bipartisan support. "I'd like to see tariffs on Iran. It would make it much stronger," Trump said. If approved, the bill would impose economic sanctions on Russia and those supporting its war against Ukraine. In recent weeks, the Trump administration has imposed or announced new duties on goods from dozens of countries, including Canada, Brazil and the 2...