The humanitarian crisis unfolding in Ukraine as Russian President Vladimir Putin unleashes his military’s might is starting to exhibit ripple effects in the United States.

The Biden administration announced this week that it will shield Ukrainians already in the U.S. from deportation if their visas expire in the next 18 months. But experts are imploring President Joe Biden to send help to Ukraine, and Europe broadly, as the United Nations estimates that 1 million people have fled the war-torn country.