In a word. No.
The father determines the citizenship in Europe. England liked to proclaim that people born of English blood were Subjects of the Crown. in the thirties women in England couldn’t pass anything but gas.
What if Venezuela passed a law declaring that everyone born in North America would be considered as Venezuelan citizens, subject to laws of Venezuela. Would they actually be citizens of Venezuela?
If you had been reading my posts you would know that I stated very clearly that before 2009, the situation was a bit murky. But, in 2009 the Borders, Citizenship and Immigration Act came into effect providing that a person born outside the UK to a British mother may be entitled to register as a British citizen by descent if that person was born before 1 January 1983. That law clarified that a person born in 1946, able to claim British nationality by descent (both apply to Donald Trump) is entitled to British nationality.
What if Venezuela passed a law declaring that everyone born in North America would be considered as Venezuelan citizens, subject to laws of Venezuela. Would they actually be citizens of Venezuela?
Yes. It is up to Venezuela to determine their own criteria for citizenship. Of course, such laws could not be enforced in the United States.