Colonialism prior to the United States becoming a nation doesn't count as it isn't something the United States did. Secondly, the situation with indigenous tribes is far more complex than a few sources would show. As for Puerto Rico, if they wanted to be an independent nation, they could become one tomorrow. The problem is they have had a split population on whether to become a state or become independent leaving them in limbo as a territory of the US.
Hawaii is one case where colonialism-- actually more mercantilism--did occur. There is the case for a sort of imperialism in the 20's and 30's with the Central American "banana republics" too.
But on the whole there isn't a case to be made that it was some ongoing thing like the European powers had been doing for centuries.
Going back to Native American tribes. Many from the East Coast to the Great Lakes willingly participated and took sides in European warfare on the American continent. Unfortunately for them, all-too-often they chose the losing side and lost their lands as a result of those wars. That's nothing unique or unusual. It's also mostly pre-US history.
The plains tribes were all stone age hunter gatherers who had no established territory and lived a nomadic lifestyle. They were doomed by the vast gulf in technology and social development the rest of the world had. In the case of the Apache or Modroc there is a strong argument to be made that their lifestyle of raiding and pillaging while remaining nomadic was incompatible with any settled group Native American like the Tohono O'tham (Papago), or European (Spanish, English, or American) and they would be stomped on for it eventually.
In addition, with Native American tribes not having well defined borders, early colonization wasn't really intruding on their lands in any case. What really made a difference were things like technology and health issues. Settlers, Spanish, English, French, or Dutch, it really doesn't matter all brought their technologies with them. That included farming methods, tools, and weapons. Much of this simply overwhelmed the Native Americans as it spread uncontrolled. For example, the Spanish regularly released pigs, cows, horses, etc., to become feral and multiply in the wild. That would ensure they had food years later on land they now occupied. Horses gave many Native Tribes a mobility they never previously had as horses were not indigenous to the Americas.
But these feral animals, particular pigs, proved a huge detriment to Native American agriculture and destroyed crops wholesale leading to frequent famines.
Anyway, the situation with early American settlement is far more complex and less one-sided than many revisionist histories make it out to be.
