A group of House Democrats introduced a bill Friday that would block some of the provisions in Postmaster General Louis DeJoy’s controversial 10-year plan for the U.S. Postal Service.

The bill – called the Delivering Envelopes Judiciously On-time Year-round Act, or DEJOY Act – would maintain current guidelines and expectations for mail delivery and prohibit the service from increasing the expected delivery window.

According to current standards, first-class mail is expected to be delivered within three days. Among the many changes outlined in his proposal, Postmaster DeJoy wants to extend that delivery window to as many as five days, though with the majority of mail still delivered within the three-day timeframe.

“This particular change, going from 100 percent of first-class mail being delivered one to three days to only 70 percent, would be a nonstarter, in my opinion, with the American people,” Rep. Raja Krishnamoorthi (D-IL) told The Washington Post. Krishnamoorthi introduced the DEJOY Act with six co-sponsors, all Democrats.

In response, a spokesperson for the USPS said the agency did not support maintaining “unachievable service standards.”

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