美国总统乔•拜登提名的内政部土地管理局西部地区候选人因多年前和打树钉的极端环保主义者有关联遭到共和党的抵制。请看来自网络的报道：

U.S. President Joe Biden’s nominee to oversee federal lands in the country’s West is facing Republican pressure to withdraw over her ties to environmental activists convicted of spiking trees to sabotage a national forest timber sale more than 30 years ago.

U.S. Senator John Barrasso, the ranking Republican on the Senate energy committee, said Friday that U.S. Bureau of Land Management nominee Tracy Stone-Manning should be disqualified for her collaboration with “extreme environmental activists.”

报道中的spike trees就是“打树钉”， 指在不影响树木正常生长的前提下，在树干中打入钉子之类的异物，降低树木的经济价值，让砍伐者自行放弃。如果伐木者坚持砍树，树钉会在砍伐时爆裂，伤害伐木者并毁坏伐木工具。打树钉在美国是违法行为。