(CNN) President Donald Trump's State of the Union address was peppered with knowing references to great moments in American history. He praised World War II veterans who had stormed the beaches at Normandy and who had parachuted behind enemy lines. He noted the American liberation of Nazi concentration camps. He praised American astronauts.

But there was one reference that might have been unintentional.

Democrats just took control of the House of Representatives, and they plan a robust set of investigations of Trump and will follow on the Russia investigation of special counsel Robert Mueller.

Trump asked them to cut it out.

"If there is going to be peace and legislation, there cannot be war and investigation," he said.

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