Nearly every president in the past 100 years has declared national monuments, from Teddy Roosevelt creating the Grand Canyon National Monument to George W. Bush preserving 10 islands and 140,000 square miles of ocean waters in the Northwestern Hawaiian Islands.
After being nearly eradicated from the lower 48 states by the 1960s, bald eagles were re-introduced to the Adirondacks in the 1980s, and I'm proud to report the view from my home indicates they are flourishing in upstate New York.