Commentary President Joe Biden heads to Europe Wednesday to meet with European leaders. He says the goal is to work together to “deliver real results” on critical issues, like climate change and cybersecurity. Biden is ducking the most important issue—the cause of the pandemic. He should be marshaling allies to act in unison by squeezing China to get answers and demand reparations. The evidence is mounting that China is guilty of manslaughter on a massive scale. Damning evidence published on the opinion page of The Wall Street Journal on Saturday shows that COVID-19’s genetic sequence is found nowhere in nature, making it unlikely the killer virus leaped from animals to humans naturally. Scientists Dr. Stephen Quay and Richard Muller argue that the COVID-19 genetic sequence is exactly what researchers would choose to use to engineer a virus for maximum infectivity against humans. Other recent analyses of the virus also point …