Why is it so controversial to suggest that the USA needs a new constitution?

You change the laws through the Constitutional process. Period. Otherwise, you are arguing for revolution, and that only involves violence of some sort. If you want things to get really bloody, then revolution is what you want. And guess what? A bunch of people are willing to fight you to the death over it.

revolution is notoriously a hard sell

Agreed 1000%. For starters, in regards to the Second Amendment, bullets weren't even invented until approximately 50yrs after it was written. All they had was muskets lol.

1. Revolutions don't always involve "violence of some sort"
2. I'm not arguing for a revolution, I'm arguing for a constitutional convention

Unsurprisingly, many Americans have no idea that much of the advanced world ALSO have constitutions, and that they change them from time to time.

Changing a constitution does not need to involve violence. It absolutely should be updated.

I've read many stupid things from leftists about guns before, but this might take the cake.

The Constitution can be amended. It can be changed through a Constitutionally legal process, therefore there is no need for a new constitution. If there is a political will for change, it can be done.

Stop and think what might go wrong if we were to throw away to constitution. Are you so sure you will get what you want in a new constitution? Stop for a moment and do a risk/reward analysis on that one.

a. the constitution can be amended and has been amended

b. imagine we did want to start fresh. would you trust the morons in office now to create something good? lol

So far we've survived with amending it as needed.

Some haven’t.

Even though our constitution isn't perfect, I would hate to think what kind of constitution present day politicians would come up with. It would definitely be worse than the constitution we have now.

The US constitution is the second oldest one after Belgium.
Now we are living in the 21st century. There needs to be a new one but usually that only happens with a bigger historic event. Maybe that's what Tucker Carlson is going for?

Survived... not thrived.

The rest of the modern world looks at us like a third world country with first world amenities

The founding fathers would be the type of people today to construct a new constitution. It's basically ideology getting in the way of progress.

I don't know why it's controversial to have liberals leave the country permanently. They clearly hate the USA. Everyone would be better off. Common sense to me.

"progress" lol

Do you have an outline of this new Constitution you want?

One reason it may be controversial to suggest the US needs a new Constitution is because the half-wits like yourself suggesting the need for a new one, have no idea what the new one should say that the current one doesn't.

I would guess the average IQ of politicians today is at least 30 points lower than the "founding fathers" (whatever that means). Not that they were geniuses, but narcissism and extraversion are probably the main predictors of political involvement today.

So who exactly would be making this constitution? That's the question.

I think the people who think a new constitution would be something they 100% agree with.

The constitution has a process for amending it and has been numerous times. The Constitution also provides for a way to legislate to adapt to changing times.

Let's take the Second Amendment since it has a lot of controversy. If you cannot get it amended then how do you expect to get an entire new constitution approved?

Also from a practical matter how would a completely new constitution be adopted? A majority of a popular vote?

Here is a read that might be of interest. https://www.cbpp.org/research/states-likely-could-not-control-constitutional-convention-on-balanced-budget-amendment-or