You can take the NY Bar exam straight. But your employment chances at a NY firm are close to zilch because your NUS degree will be worthless in the eyes of a US recruiter. Even a degree from a sixth rate UK/Australian uni or degree mill KCL is placed in higher regard. Don't believe me? Go look at, say, the assoc list at Sidley Austin Sg and see how many Sg grads there are compared to UK and Aussie grads.