A) Thomas Jefferson was not thereat the constitutional convention
What this picture is depicting is that the United States president has created a wall that would stop Europeans from having access to the country.
<h3>How is the policy discouraging immigrants shown here?</h3>
From the picture, a high wall can be seen that has the name Joe on it. Joe would be the current president of the United States.
The other side of the wall has Europeans out of it. These people are those that want to enter the country but cant.
Read more on immigrants here: brainly.com/question/5139857
They did not want the US to take the side of the british.