A compromise defense policy bill in Congress would bar the purchase of more Russian-made rocket engines to launch U.S. military satellites, clearing the way for competitive bids for 14 future launches, senior congressional aides said on Tuesday.

The proposal is one of several new agreements included in a compromise version of the 2015 National Defense Authorization Act (NDAA) filed in the House of Representatives and expected to be debated as early as this week.

The NDAA, which is approved annually, sets U.S. defense policy and authorizes spending levels but does not actually appropriate funds. It has to be approved by both chambers before going to President Barack Obama for his signature. Lawmakers will be asked to approve it without amendments, the aides said.