(Rephrases headline for clarity) KUWAIT, May 12 (Reuters) - Kuwait's justice and Islamic affairs minister has resigned, the local news service al-Rai said on Monday, after a senior U.S. official said he had called for jihad in Syria and promoted the funding of terrorism. Last month Nayef al-Ajmi rejected the comments made in March by U.S. Treasury Undersecretary David Cohen as \"groundless and baseless\", and was backed by the cabinet. Cohen said that Ajmi had \"a history of promoting jihad in Syria\" and that his image had featured on fundraising posters for a financier of a Syrian rebel group linked to al Qaeda - the Nusra Front. Kuwait has been one of the biggest humanitarian do**rs to Syria and Syrian refugees through the United Nations, but it has also struggled to control u**fficial fundraising for opposition groups in Syria by private individuals.