Temporarily blocks construction of Keystone Pipeline XL until completion of further environmental review. 

Establishes guidelines for addressing the opioid crisis by identifying gaps in knowledge and tools, and discerning ways to improve Federal R&D.

Removes lead acetate from the list of acceptable color additives for coloring hair on the scalp.

Disseminates top priorities for the Food and Drug Administration regarding innovation in plant and animal biotechnology to advance public health.

Implements a wide variety of programs and initiatives to address the opioid crisis in the United States.

Conditionally approves a plan by Hilcorp Alaska to drill for oil in the Arctic.  

Eases 2016 New Source Performance Standards for fugitive emissions of methane and other pollutants from the oil and gas sector as part of Trump Administration deregulation push

Instructs EPA to begin the rulemaking process to allow the year-round sale of 15% ethanol gasoline and to reform the renewable fuel credit market. 

Defines significant new use rules for handling single walled carbon nanotubes (and 27 other chemical substances).

Summarizes conclusions of the 12th International Nano-Authorities Dialogue of Germany, Liechtenstein, Luxembourg, Austria, and Switzerland and identifies gaps in regulation of nanomaterials in the European Union.

Amends the DNA Analysis Backlog Elimination Act of 2000 to enhance the ability of prosecutors to use DNA evidence in addressing the accumulation of violent crime cases.

Addresses the suitable clinical endpoints to demonstrate efficacy of drugs for treating opioid use disorder.