U.S. President Donald Trump offers Mexico military support to help defeat drug cartels, should his counterpart Andrés Manuel López Obrador request help, after nine American Mexican Mormon fundamentalists, including six children, are killed in an ambush by suspected cartel members in Sonora, northern Mexico.
At a hearing in New York City, Lev Parnas and Igor Fruman, two associates of U.S. President Donald Trump's personal lawyer Rudy Giuliani, who aided him with a search in Ukraine for detrimental information on President Trump's political opponents, plead not guilty to charges that they funneled $350,000 in illegal donations to a pro-Trump political committee and another $20,000 to former Republican Congressman Pete Sessions while acting on behalf of at least one Ukrainian government official.
The U.S. Court of Appeals for the Fourth Circuit dismisses a lawsuit by the state of Maryland and the District of Columbia against President Donald Trump, citing lack of legal standing in challenging payments to President Trump's private properties by foreign customers.
U.S. Trade Representative Robert Lighthizer tells a Senate panel that President Donald Trump has decided to "pause" tariffs on steel and aluminium imports from the European Union, Argentina, Australia, Brazil, Canada, Mexico, and South Korea.
Mexican President Enrique Peña Nieto cancels a scheduled trip to the United States after a heated phone call with U.S. President Donald Trump, in which Trump refused to publicly back down from his pledge of having Mexico pay for the U.S.–Mexico border wall.