I'm currently studying my RIBA Part 1 at the AA in London and looking at possibilities of doing my Masters/Part 2 in the states (Harvard GSD or MIT to be specific.)

I understand prior to the reciprocal licensing agreement, it was quite difficult to do this. Have things changed? 

And what role do liberal arts play in this pathway? UK universities don't study independent science and math modules which I know is a requirement in the states with Architecture being a STEM subject. 

Has anyone done a UK undergrad + US grad ? What steps did you have to take? 

p.s: I understand there is info online about this, but through my research, I've come across a lot of conflicting accounts, so it would be nice to hear from someone who has gone through it first hand.