A vast majority of scholars prefer washing feet during Wudu. It is the asal and the basic principle. But let's also remember it is sunnah to wipe over socks.
Only hanabli school of thought prefers wiping over the socks over washing feet. Reason being it is a consession from Allah and we need to love consessions from Allah, it is sunnah, it is different from people of bi'dah. Though these are political reasons.
What most scholars refer to wiping over is Kuff which is now losely translated as socks. In my opinion we should focus on washing our feet and that is more rewarding.
Shaykh Abu Eesa explains further and answers.
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