Checking their claims is actually quite easy, as article 233 is pretty straightforward. It lays out six scenarios whereby the head of the national assembly can temporarily assume the duties of the president for 30 days for the express purpose of holding another vote to fill the vacant presidential seat. None of the conditions have been met. While it‘s preposterous to assert that US foreign policy should be driven by the desire to enforce another country‘s constitution (while violating ours), even if we were to allow that to slip in this case there would simply be no legal case to recognize Juan Guaido as Venezuela‘s president.