Governors from seven East Coast states formed a coalition on Monday, led by New York, to develop a joint reopening plan. Three governors from the West Coast formed a similar plan. The 10 states, mostly led by Democrats, together make up 38% of the U.S. economy.

As part of Cuomo’s effort, McKinsey & Company is producing models on testing, infections and other key data points that will underpin decisions on how and when to reopen the region’s economy, the sources said…

The goal is to “Trump-proof” the plan, said an adviser to New Jersey Governor Phil Murphy.

“We think Trump ultimately will blink on this, but if not, we need to push back, and we are reaching out to top experts and other professionals to come up with a bullet-proof plan,” to open on the state’s terms, said a Cuomo adviser.