President Trump sent National Guard soldiers to cities like Portland and Los Angeles. The government said the soldiers were needed to protect buildings and people. Not everyone agreed with this decision. Many local leaders were surprised and unhappy.
Some cities decided to challenge the President's order. They did not want the soldiers in their streets. They believed the President did not have the power to do this. The cities took their argument to the legal system.
The problem went to federal courts. Lawyers for the cities and the government presented their cases. The judges listened to both sides very carefully. These cases were very important for understanding the president's power.
In the end, many judges ruled against the President's actions. For example, a judge in Portland said the deployment was not legal. She decided there was no real emergency, so the soldiers could not be sent there.