Panama has complained to the United Nations over US President Donald Trump's "worrying" threat to seize the Panama Canal, even as it launched an audit of the Hong Kong-linked operator of two ports on the interoceanic waterway.

Some Panamanians saw Trump's remarks as a way of applying pressure on Panama for something else he wants: better control of migration through the Darien Gap.

Monrovia NSU CHALLENGER bulk carrier transits the expanded canal through Cocoli Locks at the Panama Canal, on the outskirts of Panama City, Panama April 19, 2023. REUTERS/Aris Martinez/File Photo WASHINGTON (Reuters) -Newly sworn-in President Donald Trump vowed on Monday that the United States would take back the Panama Canal as he delivered an inauguration speech in which he invoked the 19th century expansionist doctrine of "Manifest Destiny" in laying out plans for space exploration.