Christian Republicans are expressing frustration at Donald and Melania Trump after it was announced Melania would attend a fundraiser for the pro-LGBT group the Log Cabin Republicans at Mar-a-Lago later this month. Raw Story recently reported on the event, noting that the former first lady, known for supporting LGBT rights, will help raise money for the group that was banned from the Texas Republican Party. But not everyone is happy about that. ALSO READ: A criminologist explains why keeping Trump from the White House is all that matters Jenna Ellis, the Donald Trump attorney who tearfully ple…