The report from the National Defense Authorization Act for Fiscal Year 2016 can be found here: The National Defense Authorization Act for Fiscal Year 2016 and in it you can find:

Sec 1685: Concept development of space-based missile defense layer

The House bill contained a provision (sec. 1675) that would require the Director of the Missile Defense Agency (MDA), no later than 30 days after the date of the enactment of this Act, to commence a concept definition, design, research, development, and engineering evaluation of a space-based ballistic missile intercept and defeat layer to the ballistic missile defense system, and submit a report to the congressional defense committees on the findings of such concept development no later than 1 year after the date of the enactment of this Act.

The Senate bill contained no similar provision, but included language in the report accompanying its bill, that would request a report from the Missile Defense Agency on the
need for a space-based interceptor layer, assessment of the maturity of necessary technology, and an estimate of the effectiveness and cost of such a space-based missile defense layer.

The Senate recedes with an amendment that would require the Director of the Missile Defense Agency, in coordination with the Director of the Defense Advanced Research Project Agency and the Secretary of the Air Force, to commence the concept definition of a space-based ballistic missile intercept layer and report its findings to the defense committees not later than 1 year after the date of enactment of this Act. The conference
agreement does not include the language in the original House provision that would direct MDA to begin design, engineering evaluations, or research and development on a space-based layer.

Not later than March 31, 2016, the Director of the Missile Defense Agency shall provide to the congressional defense committees an interim briefing on the plan described in subsection (c) (2). In light of this conference agreement, the Missile Defense Agency does not have to submit to the congressional defense committees the report on a space-based missile defense interceptor as directed in the Senate Report 114-49 accompanying the Senate bill.