SEATTLE — The Trump administration’s proposal to expand offshore drilling off the Pacific Northwest coast is drawing vocal opposition in a region where multimillion-dollar fossil fuel projects have been blocked in recent years.

The governors of Washington and Oregon, many in the states’ congressional delegations and other top state officials have criticized Interior Secretary Ryan Zinke’s plan to open 90 percent of the nation’s offshore reserves to development by private companies.

They say it jeopardizes the environment and the health, safety and economic well-being of coastal communities.

Opponents spoke out Monday at a hearing that a coalition of groups organized in Olympia, on the same day as an “open house” hosted by the Bureau of Ocean Energy Management.

Attorney General Bob Ferguson told dozens gathered — some wearing yellow hazmat suits and holding “Stop Trump’s Big Oil Giveaways” signs — that he will sue if the plan is approved.