This was one more maneuver in a long-running battle between Congress and the administration. Months ago, Congress set a deadline of March 17 for the State Department to designate ISIS actions as genocide. But according to news reports, Obama administration officials say it appears likely the administration will let the deadline pass while it ponders the legal consequences of the designation.

If the deadline passes without action, it will undoubtedly fuel criticism of the administration by the likes of Donald Trump. It’s worth noting that major candidates, including Hillary Clinton, Marco Rubio and Ted Cruz have all demanded that the administration label ISIS atrocities as genocide.

And they are not alone. The International Association of Genocide Scholars, the expert on the subject, asked the U.S. to declare that ISIS acts — thoroughly documented by the group itself, human rights groups, and more recently in a detailed report by the Knights of Columbus — constitute a violation of the International Convention on the Prevention and Punishment of the Crime of Genocide. Other prominent voices declaring that the devastation of Christian communities, the enslavement and massacres of Yazidis, and the repeated slaughters, crucifixions and beheadings constitute genocide include Pope Francis and the European Parliament.

The truth is everyone knows that ISIS is targeting ethnic, religious, and national minorities (Turkmen, Yazidis, Kurds and others) with the”intent to destroy” these groups. Their actions meet the definition established by the U.N genocide convention of 1948 and subsequent legal rulings.

The main reason is that once it uses the genocide label, Obama will come under growing pressure to act more forcefully against ISIS. It will raise the profile of the group and raise its position on the list of foreign policy priorities.

It will add up to more pressure on Obama to focus on the Middle East, something he has seemed to resist (mostly unsuccessfully) since he took office. Another reason for his reluctance may be that, from his perspective, the label would make a terrorist group seem more prominent and menacing in the mind of Americans, when, as Obama explained in a recent article in the Atlantic, he’s frustrated with what he considers Americans’ excessive focus on terrorism.

Terrorism on American soil, however, is another matter entirely from the genocide that has destroyed thriving Christian communities in the Middle East and the horrors that have befallen the small Yazidi sect. This is a moral issue of the highest order, and one with which Obama has wrestled with less than impressive results.

America’s current U.N. Ambassador Samantha Power, wrote the book on modern-day genocide, and American leaders’ failure to prevent it. In the Atlantic article, we learned that Obama once responded to Power’s entreaties with a dismissive and condescending, “Samantha, enough, I’ve already read your book.”

Presidents don’t like it when Congress meddles in their foreign policy. And Obama is hardly the first president to hold back on a designation of genocide.

He has started bombing ISIS and making battlefield gains. But he does not want the historical record to register that he was the president on whose watch genocide occurred in the Middle East. Officially or not, that is already happening.

Congress wants the U.S. to lead the world in taking the case of ISIS and the rest of Syria to the U.N. A separate resolution approved on Monday condemned Syrian President Bashar al-Assad for “gross violations of international law amounting to war crimes and crimes against humanity,” and called on the president to work for the creation of an international war crimes tribunal for Syria.

History shows that this is an important moment. In at least two previous cases, American presidents downplayed the disasters unfolding in distant lands, only to take action after pressure from Congress forced their hand.

During World War II, President Roosevelt knew about the Holocaust but didn’t even mention the mass extermination of Jews until 1944, when millions had already been murdered, after Congress raised the pressure.

Similarly, during the Bosnian war of 1995, President Bill Clinton stood back as long as he could, even as concentration camps filled with emaciated prisoners were visible to all on the evening news. With former Sen. Bob Dole, running for president at the time and pushing for the U.S. to help, Clinton finally relented and intervened.

Clinton launched a successful military intervention that ended the war and halted the killing. Remember that the next time someone says military interventions are always disastrous.

In Syria, as occurs much too often, the world has allowed far too many to be killed before doing something to stop it. What is occurring there and in neighboring Iraq is, without a doubt, genocide. It’s time for the Obama administration to listen to Congress and for the President to admit it to himself, to the world, and to history.