US Postal Service says new mail ballot rules tied to Trump order are in effect

Move from USPS comes amid Trump administration's efforts to restrict mail-in voting in November's midterms

The US Postal Service (USPS) said on Thursday that new requirements for mail-in voting are now in effect as Donald Trump seeks to crack down on the practice. The move is expected to trigger a new round of legal challenges.

The Trump administration has sought to impose new rules requiring state election leaders to submit their voter rolls for inspection as part of a broader bid to increase federal government oversight over voting and elections.