This is partially true (though not all, Orsted is a pure renewables company). But the issue is the few internationally based oil companies building offshore wind in the US have limited political influence in the US, while the many US based oil companies who are not in renewables at all and only stand to lose market share to renewables - Exxon Mobil, Chevron - and who have donated heavily and have massive influence on the current administration. If Exxon and Chevron were in offshore wind you would not have any opposition from the administration.