This is a puzzle masquerading as a poem.  The hints to solve the puzzle are in plain view within the text.
Please scroll down, way down to reveal the answer I have in mind.  Thank you.  Enjoy

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A toothless tiger
Only bite, no crunch
Fangless viper
Only hiss, bite with no punch
Robbed of virility

Outranked, not
Outflanked, yeah
Now in no man’s land
Center of DMZ
Quite an irony!
No one to blame,
No blame to land on him!

Look in the mirror –
A titular head
A ceremonial chief
A victim of climate change
An impregnable sheet of ice once
Now just a body of water –
Lost in the vastness of seas.

Please scroll down for the answer.

If your answer is Biden, it is not correct.  Please go back.  Otherwise , scroll down a little more.

The answer is Chief Justice (of the US Supreme Court)

The word Chief and two parts of the word Justice (just and ice) appear in the text.
…. A ceremonial chief…..
…. An impregnable sheet of ice once
Now just a body of water …..

Now that you know the answer, I recommend that you re-read the piece.
It would make more sense now.