Treasury secretary says he was in favor ‘for months’ of putting Megaspeed on blacklist to stop Nvidia exporting advanced chips to BeijingSign up for the Breaking News US emailIn other tech-related news, the Microsoft outage is still going. The longest in the company’s history. My colleagues are covering the latest and how it’s affecting millions and pretty much every industry …As I noted earlier, the calls for Howard Lutnick to appear before.