The term “Founding Fathers” is not generally used to refer to Congress, even the Congress in 1790. It more commonly refers to the men who signed the Declaration of Independence or drafted / signed / ratified the Constitution.
Sounds good, except they were the same people. Let me help you, let’s do the math. 1790-1787=3. Yes three years separated the writing of the Constitution from the First Congress. Did you think the “Founders” wrote the Constitution and then decided to retire.
The Act also establishes the United States citizenship of certain children of citizens, born abroad, without the need for naturalization: "the children of citizens of the United States that may be born beyond Sea, or out of the limits of the United States, shall be considered as natural born Citizens".