U.S. President Donald Trump has asked Apple to change the name of Lake Ontario to "Lake America" on its maps app, his administration's interior chief said Monday, days after signing an executive order over the body of water now in the spotlight amid his escalating trade war with Canada.

Interior Secretary Doug Burgum told Fox's "Mornings with Maria" program that Trump "reached out to Apple directly." He said he was confident the "Lake America" name could be seen on its platform soon.

Apple did not immediately comment in response Monday.