Over 30 Trump associates subpoenaed by grand jury over alleged efforts to influence 2020 election results

More than 30 people associated with former President Donald Trump and alleged efforts to influence the 2020 election results have received federal grand jury subpoenas, four sources told CBS News. 

The subpoenas, many of which were issued last week, mark a significant escalation in the Justice Department's investigation into origins of the Jan. 6, 2021, Capitol riot and other alleged attempts to stop the transfer of power to then-President-elect Joe Biden. One source familiar with the case characterized the investigation as huge. 

The Justice Department is examining how money was raised and...