House Speaker Nancy Pelosi said Sunday she is calling lawmakers back to session this week to vote on a bill that would bar changes to the U.S. Postal Service amid fears over delayed ballots. In a letter to Democrats, Pelosi, D-Calif., cited President Donald Trump's "campaign to sabotage the election," saying he was manipulating the Postal Service to disenfranchise voters. Pelosi said she is calling on House members to return from their August recess this week and vote on the bill, called the Delivering for America Act. The bill, introduced by Oversight and Reform Committee Chairwoman Carolyn Maloney, D-N.Y., would prohibit officials from implementing changes at the Postal Service until next year, Pelosi said. Read morehttps://www.nbcnews.com/politics/congress/democrats-set-emergency-hearing-top-postal-officials-amid-fear-over-n1236886