Marjorie Taylor Greene says she was ‘naive’ for believing Trump is man of the people
(www.theguardian.com)
Spellings in dictionaries:
naive is covered by Merriam-Webster,[2] AHD,[3] Collins,[4] Macmillan,[5] Cambridge[6] and OED.[7]
naïve is covered by Merriam-Webster (as a variant),[2] AHD,[3] Collins (as a variant),[4] Macmillan (as a variant),[5] Cambridge (as a variant),[6] OED (as a variant),[7] and Century 1911.[8]
GPO manual states that "Diacritical marks are not used with anglicized word" and mentions naive and naivete.