Seven advisers and allies of Donald J. Trump, including Rudolph W. Giuliani and Senator Lindsey Graham, were subpoenaed on Tuesday in the ongoing criminal investigation in Georgia of election interference by Mr. Trump and his associates. The move was the latest sign that the inquiry has entangled a number of prominent members of Mr. Trump’s orbit, and may cloud the future for the former president.
The subpoenas underscore the breadth of the…