The Michigan congressman who is co-sponsoring a bill to prevent the United States from invading Canada says he and other Democrats have brought the bill forward because they are alarmed by U.S. President Donald Trump's expansionist rhetoric.

Shri Thanedar is one of the backers of H.R. 1936, dubbed the No Invading Allies Act, which requires congressional approval for any use of force against Canada, Panama or Greenland.

"Recent statements by President Trump about Canada being the 51st state or redesigning, redrawing the boundaries between the two states is very troubling," said Shri Thanedar, the congressman for Michigan's 13th district, which includes Detroit and some of its eastern and southwestern suburbs.

"Canada is an ally, a friendly country. We have a great relationship with Canada. They are a great neighbour and we have great commerce between the two countries."

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