#Trump100Days

Mr. Trump’s executive actions have already led to an explosion of lawsuits. Some of the legal intensity can be explained by the speed and scope of his actions. These include cutting funding across numerous programs; firing large swaths of the federal work force; imposing emergency tariffs; reshaping immigration and deportation policies; demanding federal oversight over universities; and more.

In other recent administrations, lawsuits challenging major federal policies have become common. But those suits often come later, in response to laws and regulations that take months and years to develop. The second Trump term is remarkable because of both the number of suits and their immediacy.

Though the Supreme Court has begun considering aspects of a few cases, most of this litigation is in preliminary stages. It may be years before a full accounting of how many cases Mr. Trump has won or lost.