WASHINGTON - Postmaster General Louis DeJoy, pressed by senators over mail delivery disruptions, said Friday he was unaware of changes that sparked a public uproar, but his responses raised fresh questions about how the Postal Service will ensure timely delivery of ballots for the November election.DeJoy told senators he has zero plans to restore blue mailboxes and sorting equipment that have been removed, saying they are “not needed.” He did say that election mail would continue to be prioritized for delivery as in years past.But while DeJoy distanced himself from President Donald Trump's complaints about mail-in ballots that are expected to surge in the coronavirus pandemic, he told senators could not yet provide a detailed plan about how.