In March 2019, as the House debated President Trump's veto of a measure unwinding his declaration of a national emergency at the southern border, Nadler said, "I'm convinced that the president's actions are unlawful and deeply irresponsible. A core foundation of our system of government and of democracies across the world going back hundreds of years is that the executive cannot unilaterally spend taxpayer money without the legislature's consent."[30]