“We think that President Trump will be in violation of the Constitution and federal statutes on day one, and we plan a vigorous offense to ensure the worst of the constitutional violations do not occur,” said Anthony D. Romero, the ACLU’s executive director. “We may have a new president, but we have the same old system of checks and balances,” he added. Strategists behind the campaign for impeachment said they are confident that other groups will soon join their cause. They argue that Trump will immediately be in violation of the U.S. Constitution’s Foreign Emoluments Clause, which prohibits a president from accepting a gift or benefit from a foreign leader or government.