In many places, moose, bear, wolves and other wildlife can simply walk between the two nations. There are barriers — roads, development and a lack of protected habitat on either side — but for more than a century, relatively relaxed border policy and a shared sense of purpose saw conservationists in both countries working together to overcome them. Now, US President Trump has ratcheted up the challenges to cross-border conservation. …Many of Trump’s actions have explicit implications for cross-border conservation — in North America and globally. …Canadian conservation organizations have reported losing co-funding as a result of Trump’s cuts to foreign aid. As his administration has stretched staffing thin and proposed deep budget cuts at the US National Park Service, it ended funding many found crucial to habitat conservation work across the border. Trump has also withdrawn from the Green Climate Fund and the Paris Agreement.