In the first of his two Talking Points Memos tonight, Bill O’Reilly said history will not look kindly on President Obama taking unilateral action on immigration reform.

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In the president's address to the nation tomorrow at 8p ET, it is widely expected that he will legalize about five million undocumented people, in addition to taking other actions on immigration reform, O'Reilly said.

"The Factor" host shared numbers from a new NBC/Wall Street Journal poll that show how controversial the president's actions are.

When asked if you approve or disapprove of the president taking executive action on immigration, 48 percent of Americans disapproved, 38 percent approved, 14 percent had no opinion or were unsure.

"Setting emotion aside, it's not really about five million undocumented human beings, it's about President Obama challenging the Constitution," O'Reilly said.

He argued Obama should wait and give the new Congress a chance to pass a fair immigration law, and asserted that the way things stand now, the president will lose in the courts if he uses his executive authority to push through immigration reform.

"I believe Mr. Obama knows that and well understands how divisive his actions will be," O'Reilly concluded. "But he doesn't seem to care, and history will not look kindly on a sitting president causing a constitutional ruckus. Trust me on that."

Watch the full Talking Points Memo above.

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