Having watched the series when it was originally shown on British TV, I have recently binge-watched all seven seasons again. It is still the second best American series (personally I think that 'The Wire' is the best) but the Josh/Donna story arc, which I originally thought mildly entertaining simply becomes annoying with the perspective of time.
Josh is an arrogant ass, whose many mistakes should have got him fired while Janel Moloney has two schticks: puzzled/sad and 'kooky'. Had I been Executive Producer I'd have sacked both Whitford and Moloney after season 3 and used the money to pay Rob Lowe more to stay.
That said the series still provides an education to us non-Americans and explains why the USA is a failed state as a result of its nonsensical constitution. Apparently Hamilton favoured a parliamentary system and what is clear is that the countries that follow that system have more effective governments than the US.