As the mayors of three great global cities — New York, Paris and London — we urge the world leaders assembling at the United Nations to take decisive action to provide relief and safe haven to refugees fleeing conflict and migrants fleeing economic hardship, and to support those who are already doing this work.

We will do our part, too. Our cities pledge to continue to stand for inclusivity, and that is why our cities support services and programs that help all residents, including our diverse immigrant communities, feel welcome, so that every resident feels part of our great cities.

In New York and Paris, for example, municipal ID programs have achieved great success in increasing a sense of belonging among immigrants and allowing for greater access to services like bank accounts and veterans benefits and city resources like libraries and cultural institutions. In less than two years, New York’s municipal ID program, known as IDNYC, has signed up over 10 percent of the city’s total population and garnered strong praise from a diverse coalition of community members, advocates and institutional partners.