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House committee chairman advising Trump on national security

Donald Trump is getting some advice that could give him some much needed gravitas on an issue he's had problems with in the past.

Republican presidential candidate Donald Trump speaks during a rally in North Charleston, S.C., on Feb. 19, 2016. (Photo by Mark Peterson/Redux for MSNBC)
Republican presidential candidate Donald Trump speaks during a rally in North Charleston, S.C., on Feb. 19, 2016.mark peterson/redux pictures 2016

Alexandra Jaffe