The committee cited concerns about the "turmoil surrounding the Space Development Agency."
The House and Senate voted in support of a space service to be nested inside the Air Force, but much still remains unresolved.
Several provisions in the markup address space procurement policy and assign specific tasks to the Space Development Agency.
The small launch amendments made it into the SASC markup that the committee voted in a closed session May 22 to advance to the Senate floor.
The HAC notes that the decision to not back the $72 million request should not be read as a complete rejection of the idea of establishing a Space Force.
House appropriators would block funding for the Space Development Agency pending a report on SDA's future projects and roles.
Defense appropriators complained about a lack of information despite efforts by Pentagon officials to brief lawmakers and staffs since the proposal was rolled out in late February.
The United States should do more to protect its space systems and build capabilities as a form of deterrence, experts said.
Moore’s Law has come home to roost in the space business. Taking seven to 10 years to develop and deploy operational space systems is no longer efficient nor acceptable.
A letter sent to Shanahan questions DoD's decision to shift missions away from the Air Force Space and Missile Systems Center.
Shanahan said the top priorities in DoD space reorganization are U.S. Space Command and the Space Development Agency.
In a letter to Shanahan, lawmakers point out New Mexico is home to dozens of space-focused government and private sector organizations.
Lawmakers are raising concerns about the cost and the rationale for a Space Force.
The bipartisan caucus will bring a central focus to GPS-related issues.
Sen. Feinstein and Rep. Calvert asked Secretary Heather Wilson to "review how the Air Force intends to maintain assured access to space while preserving maximum competitive opportunities for all certified launch providers."