true, mr. president, and that nevada will continue to check ballot signatures against the voter registration cards. it's done at the county level. >> but that's not what they said when they approved it. they said they're not going to check signatures. >> reporter: now controversy at the post office. president trump claims the agency was given insufficient notice about the millions of expected ballots. >> it's a catastrophe waiting to happen. >> reporter: house democrats have now requested testimony from the new postmaster general, one of trump's top donors, amid reports that his cost cutting moves have created backlogs in mail delivery. the postal service saying the agency still has ample capacity for the election but critics point to new york's congressional primary back in june. a winner was just declared this week after a judge ruled on a dispute over whether some ballots were postmarked too late. as for sarah palin, she's not ruling out another run for office. >> i have certainly...