The judge did not issue a ruling Monday in the closely watched fight over more than $2 billion in canceled federal research funding. But she said the government’s arguments raised “mind-boggling” questions.

The Trump administration’s legal case for cutting nearly $3 billion in federal aid to Harvard University was met with skepticism.

The same day Harvard rejected the government’s demands, Trump officials moved to freeze $2.2 billion in research grants. Education Secretary Linda McMahon declared in May that Harvard would no longer be eligible for new grants, and weeks later the administration began canceling contracts with Harvard.

President Donald Trump took to social media to harshly criticize a Boston federal judge overseeing the lawsuit levied against his administration by Harvard University, further threatening to launch an appeal if she rules against him.