President Biden’s re-election strategy boils down to persuading Americans that Donald Trump poses a threat to democracy. After the Supreme Court’s presidential immunity decision on Monday, Mr. Biden warned in a speech that “any President, including Donald Trump, will now be free to ignore the law.”

Rulings made by the Supreme Court in its recently concluded term are the result of a long game played by conservatives from the Reagan revolution.

In a major ruling on June 28, the Supreme Court took an ax to the power of federal agencies to interpret the laws they administer and ruled that courts should rely on their own interpretation of ambiguous laws.