I was told I could not 'participate'

Federal government officials cancelled a planned Glacier National Park meeting between Facebook founder Mark Zuckerberg and a top government researcher.
The Washington Post reports, “the area’s top climate scientist was not permitted to share his expertise on global warming’s role in the retreating ice sheets with Zuckerberg, one of the most prominent business leaders to denounce President Trump’s June withdrawal from the Paris climate accord.”
U.S. Geological Survey research ecologist Daniel Fagre said he scheduled tour of Logan Pass with Zuckerberg was abruptly cancelled three days prior to the visit.
“I literally was told I would no longer be participating,” Fagre told The Post. “I’ve gotten nothing back. We’ve definitely been left in the dark.”

I was told I could not 'participate': Climate scientist barred by US government from meeting with Mark Zuckerberg