Musk warned on X on Thursday local time that if U.S. debt continues to grow, the dollar will one day be worthless.

Musk was responding to a post from an X user who sharedhilodoubleupjokerpokermachineIn one message, Trump's former national security adviser McMaster warned that the United States needs to double defense spending to 4% of GDP to deal with potential threats.

Musk responded: "hilodoubleupjokerpokermachineWe need to do something about our national debt or the dollar will be worthless."

Another user commented: "The problem is that no government is willing to take on the national debt problem because a long-term solution could hurt the economy in the short term."

Musk responded: "Well, there's always something to give up. We should at least slow down debt growth."