massive Chinese phone company ZTE and on Trump’s “America First” foreign policy.

The U.S. intelligence community has warned about the Chinese smartphone maker’s perceived ties to the Chinese government and its possible use for remote surveillance. ZTE has been fined in recent years for shipping American goods to five embargoed countries, including Iran and North Korea. The Pentagon banned ZTE phones from retail stores on military bases because the devices could be a security risk. And the Trump administration ordered a seven-year halt in American shipments of computer microchips and software that are at the heart of most of ZTE’s telecommunications gear.

That ban particularly was devastating to ZTE and its 75,000 employees, with the company recently announcing it was halting operations.

Trump tweeted that he was working with the president— including former New York City Mayor Michael Bloomberg, California Gov. Jerry Brown and former Vice President Al Gore — gathered in Germany and took the spotlight over the weekend as they promised to redouble their efforts in the face of federal inaction.

The states and cities that remain committed to addressing climate change have formed several formal alliances to show the international community a unified front. On Saturday, a group led by Brown and Bloomberg released a report — known as America’s Pledge — that promised to quantity the scale of those commitments which range from transitioning state power grids away from fossil fuels to pushing for the adoption of electric vehicles.

“We are not trying to replace the U.S. State Department,” says Dan Firger of Bloomberg Philanthropies’s environment