Canada shrank by like three times when I pulled it down and I did the math to double-check: the distance between the northern mainland shore and the tippy top of that island extending beyond the map is 1,800 kms, from the northern shore to the US border is 2,000 kms, so pulling the southern border of Canada to the southern US border would still extend the northern Canadian islands into mainland northern Canada

Had more than 3,700 kms to play with in total, from North Dakota to the Rio Grande is only 2,000 km, damn that country is big