President Donald Trump responded to Tuesday’s Supreme Court decision on birthright citizenship with a message that sounded like a challenge.

His target was not the Court.

It was the system.

In a post on Truth Social, Trump reacted to the ruling by sarcastically congratulating Chinese President Xi Jinping, arguing that the decision would end up benefiting foreign nationals more than American citizens.

“I would like to congratulate President Xi, and the Great Country of China, on their massive Birthright Citizenship WIN!” Trump wrote.

The line landed exactly as intended — not as praise for Beijing, but as a sharp criticism of a legal and political framework Trump has long argued creates incentives for foreign nationals to secure U.S. citizenship for their children through birth tourism.

The Supreme Court’s decision leaves intact, at least for now, the broader practice that critics say allows wealthy foreign families to travel to the United States specifically to give birth and secure citizenship advantages for their children.

Among the countries frequently discussed in that debate is China, where birth tourism operations and travel arrangements have drawn attention for years from immigration critics and lawmakers concerned about abuse of the system.

Trump’s response framed the ruling as part of a larger problem that goes beyond immigration policy and reaches into questions of sovereignty, citizenship, and whether American law should prioritize citizens or remain open to strategic exploitation.

His first public reaction earlier in the day carried a different tone. Rather than aiming at foreign governments, Trump called on Congress to step in legislatively and address birthright citizenship directly.

That shift — from legislative appeal to political pressure — reflects a familiar Trump pattern: push institutions publicly, force the debate into the open, and make opponents defend positions that sound far less popular once translated into plain English.

For years, the political class treated birthright citizenship as untouchable. Trump’s movement did the opposite — turning it into a national argument over borders, incentives, and what citizenship actually means.

And if Tuesday’s reaction made one thing clear, it is that Trump is not treating this as the end of the fight. In the America First view, citizenship is not supposed to be a loophole, and national policy is not supposed to function as a global benefit program.