The Environmental Protection Agency has reversed its long-standing endangerment finding that greenhouse gases endanger public health, (“Trump administration revokes key climate change finding in major rollback,” Feb. 12). This reversal essentially strips away the legal foundation for the agency’s ability to regulate emissions.

I am deeply concerned about the resulting loss of regulation. It creates a green light for toxic emissions and pollution that would profoundly affect our health — worsening asthma, heart disease and exposure to wildfire smoke.

I believe we need strong climate leadership, not rollbacks. Courts must reverse this decision immediately to protect our communities. Our state and local governments must step up where the federal government is retreating.

Gracie Campbell, Portland