Apologies if this is an existing question. I am not familiar with the terminology required to tag this appropriately or come up with keywords for the search. Something along the lines of accusative case or what have you.
Perhaps this is a simple case of style.
Take these two sentences;
We've determined that you have previously visited Elbonia.
and
We've determined you have previously visited Elbonia.
Which is the correct structure, and why?