Is nationalism idol worship?

No

No

It can be if abused.

In the age of the international bankers and corporations who are strip mining the wealth of nations it's called "self defense."

No. One world government is idol worship.

Like trump said, we worship GOD, not Government.

You must be a noob at geo politics and the bible.

If it comed before a relationship with God through the Lord Jesus Christ, prayer, and reading the Bible,than most certainly.

No it is not, it is the opposite of home sickness you see today in people who leave their native lands and attempt to create them in different lands and adjacent to the founded and standing native places and people own homeland and national way of theirs.

It means content with their homeland and people as well as way of life in it.

Not everybody sees things the same, or defines what they see the same, as it is originated from their own way of seeing things and what they willfully look for.

If a people cannot honor their own house and peoples they cannot honor others others either.
They have no respect for such that they do not want.
What good is a visitor who does not want the people or house they entered into as a visitor of it, coming in with disrespect and loathing of it and them?

It is a matter of respect by being accepting of actuality and practicing honorable behavior upon others, or things not your own and even what is your own, in this case your own nation/homeland and people and doing same for others in theirs.

Borderless global societies and breaking down all nations boundaries, or entering them illegally and their place without invitation granted, is a disgraceful thieving and disrespectful thing carried out against the rightful peoples, nations people and their place, by uncouth and criminal persons.
That is real time, place and people not virtual and it does real tangible damages and harms unto others to consider others that way and carry out those damaging actions on them.

Trump like most americans gives most wonderful lip service, but ss the Lord Jesus Christ said, their hearts sre far from me. Trump isn't even saved, hear it from His own mouth:

If it replaces or dis includes God then absolutely.

Attachment to anything is a hindrance.

Yes, we have become everything were suppose to be against.
A nation ruled from the shadows by the unelected who print the money. Ever vote for who prints our money lately.

A nation of invasion.
A nation who interferes in elections of other countries
The most spied upon humans in history
The largest prison population per capita in the world
A nation of laws ruled by outlaws

A stock market that is fake, bailed out banks, dark money poured in to keep the charade going, and the biggest secret of all.... the stock market would still be going up, even if you were all dead, thats how rigged it is. High frequency trading, plunge protection team.

The merger of state and corporate powers is called fascism.

If all this has happened, and the people still cheer?
One might call that idol worship

In god we trust, right?