The UAPDA failed to be included within the Manager’s Package, due to resistance from that Committee’s Republican ranking member, Senator Rand Paul.

Here's your culprit.

"The UAPDA’s inclusion within the Manager’s Package hinged upon support from the Committee on Homeland Security and Governmental Affairs – due to its potential oversight role and involvement in a controlled UAP disclosure campaign, should it have been passed. However, sources state that the UAPDA failed to be included within the Manager’s Package, due to resistance from that Committee’s Republican ranking member, Senator Rand Paul. Liberation Times has requested comment from Senator Paul’s office."

Source: https://www.liberationtimes.com/home/paradigm-changing-ufo-transparency-legislation-fails-in-congress-for-second-consecutive-year