The Bureau of Land Management blocked at least 14 of its staff archaeologists and other specialists from attending a major scientific conference this year, at a time when archeological sites have become a flashpoint in the debate over public lands protection. The archeologists and other BLM employees ... were originally scheduled to attend the annual meeting in Washington of the Society for American Archaeology. But officials at BLM's headquarters in Washington only authorized the attendance of three archaeologists, citing the potential travel and other costs" of the trips. The archaeologists from BLM were scheduled to give a presentation at a symposium titled "Tough Issues in Land Management Archaeology," which ultimately had to be cancelled due to the lack of participation of government scientists. Some ... point to the decision as another example of the Trump Interior Department's effort to restrict researchers' communications with the public and fellow scientists." This entire incident reeks of scientific interference," said Aaron Weiss, media director at the Center for Western Priorities. Last year, officials at Interior headquarters directed the U.S. Geological Survey to delete a line from a news release discussing the role climate change played in raising Earth's oceans and removed two top climate experts at Montana's Glacier National Park from a delegation scheduled to show Facebook co-founder Mark Zuckerberg around the park full of shrinking glaciers.