"The Syrian civil war, now in its seventh year, continues to present new challenges for U.S. policymakers. Following a deadly chemical weapons attack in Syria on April 4, 2017, and subsequent U.S. defensive strikes against Syrian military infrastructure and pro-Syrian regime forces, several Members of Congress have called on the President to consult with Congress about Syria strategy. Some Members have questioned the President's authority to launch strikes against Syria in the absence of specific prior authorization from Congress. In the past, some in Congress have expressed concern about the international and domestic authorizations for such strikes in Syria, their potential unintended consequences, and the possibility of undesirable or unavoidable escalation of the Syria conflict. [...] U.S. officials and Members of Congress continue to debate how best to pursue U.S. regional security and counterterrorism goals in Syria without inadvertently strengthening U.S. adversaries or alienating U.S. partners. The Trump Administration and Members of the 115th Congress--like their predecessors--face challenges inherent to the simultaneous pursuit of U.S. nonproliferation, counterterrorism, civilian protection, and stabilization goals in Syria's evolving conflict."
CRS Report for Congress, RL33487
Federation of American Scientists: http://www.fas.org/sgp/crs/index.html