Perhaps it is a concern. Of course, back in the mid-70s there was widespread concern over the Japanese buying up land in America, including Hawaii, which pundits saying Hawaii would soon be a possession of Japan.
Then, Japan's economy went south. One thing about land: you cannot move it. Indeed, I once asked my late father why taxing districts taxed land instead of the landowner; he said "land doesn't run away".
Many of said Japanese individuals and companies had to sell their land.
But, foreign ownership here can be a concern. Remember how in 2017 Saudi Arabia became the sole owner of the Port Arthur refinery facility, the largest such facility in the United States?
https://money.cnn.com/2017/05/01/inv...hur/index.html
Indeed, after the collapse of the Soviet Union, wealthy Russians went on spree of buying US land, only to have to sell in the recent year to try and avoid sanctions being imposed.
But, as others have noted, Canada is the largest foreign landowner in the United States (mainly timber land), so let us not panic. To put another way, 97 percent of land in the United States is owned by citizens.