I figured there was something ridiculous working through here. If what you say is true, if the Constitution is indeed pro-slavery, then there is no such thing as American Exceptionalism. Since it’s pro-slavery as you say, that makes the Constitution racist. That also puts you in agreement with the New York Times 1619 Project.
You might want to consider the ramifications and the logical conclusions that necessarily are the result of the statements you’ve made.
To be clear, I agree with Douglass: The Constitution is anti-slavery. As such, there is American Exceptionalism. And I say the 1619 Project is full of it.
Exceptionalism is not the same as abolition. The two are different.
America has long been recognized as exceptional, even during the period before the 13th amendment.