Veteran Canadian rocker Neil Young has shared his fears over a potential ban from the U.S. that may await him upon his return from Europe.

The musician – who is a dual citizen of Canada and the U.S. – has not been shy in regard to his criticism of President Donald Trump in the past. Previously, Young has gone so far as to call Trump “a disgrace to my country,” and most recently, claim that “the US has lost its standing” on the world stage under the President’s leadership.

However, with an upcoming European tour set to be followed by a run of dates in the U.S., Young has taken to his Archives website to ruminate on the notion that he too may be barred from entering the country for sharing his critical thoughts on Trump.

“When I go to play music in Europe, if I talk about Donald J. Trump, I may be one of those returning to America who is barred or put in jail to sleep on a cement floor with an aluminum blanket,” Young wrote on Tuesday (April 1). “If I come back from Europe and am barred, can’t play my USA tour, all of the folks who bought tickets will not be able to come to a concert by me.

“If the fact that I think Donald Trump is the worst president in the history of our great country could stop me from coming back, what does that say for Freedom? I love America and its people and its music and its culture.”

As Young continued, he reflected on the constitutional right to freedom of speech within the country, likely referring to recent news stories such as the arrest and orders to deport Syrian-born permanent resident and pro-Palestinian activist Mahmoud Khalil.

“By these latest actions of our US government, it seems that those who speak out freely with their own opinions are now vulnerable to a non-existent Trump law,” Young wrote. “Then it seems to me that if you voted for Kamala Harris over Trump, that makes it possible for you to go to jail or be detained, punished in some way for not showing allegiance to what? How spineless is that? Trump is not be able to stand up to anyone who does not agree with his ideas?

“Remember, all months have 30 days,” he concluded. “One country, indivisible, with Liberty and Freedom for all. Remember that? I do.”

Young is currently scheduled to launch his forthcoming tour with the Chrome Hearts in Rättvik, Sweden on June 18, with North American dates set to begin in Charlotte, NC on Aug. 8. The rocker’s previously-announced plans for a free concert in Ukraine to launch the tour were recently cancelled, with Young citing safety concerns as the reason for the decision.