CLEVELAND, Ohio -- Mayor Frank Jackson announced Sunday he is joining a group of mayors focused on climate change, just days after Donald Trump announced the U.S. would withdraw from the Paris climate agreement.

Mayors National Climate Action Agenda (MNCAA), also know as Climate Mayors, has nearly 200 members. The group recently sent a letter to Trump opposing the president's policies on the environment.

"We're in support of a worldwide climate action plan and we are committed to doing our part here in Cleveland," Jackson said in a news release. "It is simply the right thing to do."

It is the second time since Trump made his announcement that Jackson has voiced his support for fighting climate change. On Friday, he posted a video on the city's website saying Trump's decision would not affect the city's efforts to reduce greenhouse gas emissions by 80 percent by 2050.

"We have a responsibility to leave for future generation a more green, vibrant and healthy Cleveland," Jackson said in Sunday's statement.

Jackson is not alone in his defiance of the decision to withdraw from the Paris Accord. Several governors and nearly 200 mayors have said they will continue to pursue the goals of the agreement, CNN reports.

In his decision, Trump said the Paris Accord is a "bad deal that will harm American workers."