Trump-proof NATO? The United States Congress is on it. American lawmakers have moved to prevent any U.S. president from unilaterally withdrawing from the international alliance.
The potentially historic move came in an annual defence-spending bill that just passed the Congress on Thursday, in a largely bipartisan final vote of 310-118.
One tiny section of the massive $886 billion US National Defense Authorization Act includes a string of rules for a NATO withdrawal.
It says no president shall suspend, terminate, denounce or withdraw from NATO without either an act of Congress or the approval of two-thirds of the U.S. Senate.
The context is Donald Trump. Even if he's not mentioned in the bill text, he's the inspiration for it. The former U.S. president increasingly appears like the front-runner in next year's election, with the strongest polls of his career.
And he's notoriously critical of NATO.
Aides say Trump discussed withdrawing in his first term. One ex-aide, John Bolton, has opined that Trump would withdraw from the alliance in a second term.
Trump's current platform says, if re-elected, he would conduct a review of NATO's mandate. It's laid out in language not normally used by a U.S. president.
"We have to finish the process we began under my administration of fundamentally re-evaluating NATO's purpose and NATO's mission," says Trump's election plan.
