India, July 17 -- The White House set the stage on Thursday ahead of US President Donald Trump's primetime address on election breaches by confirming, through an official briefed on the material, that newly declassified intelligence would allege China had compromised roughly 220 million American voter registration files between 2020 and 2023.

These files, the White House official said, included American voters' names, addresses, voting history, party affiliation, military status and phone numbers. In his speech on Thursday, the US president said that his administration has scrambled to mitigate what he described as the fallout of China's alleged access to voter data. Trump noted that the administration is in "the process of informing gov...