A key House panel has rejected the Trump administration’s plan to create Space Force, a sixth branch of the U.S. military focused on orbital operations.

The proposal “leaves many unanswered questions and lacks important details and supporting analysis to justify the proposed size, scope, cost, roles, and authorities for the new military service,” members of the Democrat-led House Appropriations Committee’s defense subcommittee said in their report on the 2020 budget proposal.

That markup reflects the subcommittee’s decisions last week.