Concerned at the continued promulgation and application by Member States of laws and regulations, such as that promulgated on 12 March 1996 known as the “Helms-Burton Act”, the extraterritorial effects of which affect the sovereignty of other States, the legitimate interests of entities or persons under their jurisdiction and the freedom of trade and navigation,
Taking note of declarations and resolutions of different intergovernmental forums, bodies and Governments that express the rejection by the international community and public opinion of the promulgation and application of measures of the kind referred to above,
…
Reiterates its call upon all States to refrain from promulgating and applying laws and measures of the kind referred to in the preamble to the present resolution, in conformity with their obligations under the Charter of the United Nations and international law, which, inter alia, reaffirm the freedom of trade and navigation;
To reiterate: in conformity with their obligations under the Charter of the United Nations and international law
I’m not aware of any way to read that that doesn’t involve concluding that the US’ actions are outside the law.
In any case I am not interested in further arguing the point. The action is nearly universally condemned and abhorrent - the international “legality” is really not an important point whatsoever and changes little since the UN has little or no power over the US.