A conservative commentator on national cable networks, Higbie is a former Navy SEAL who wrote two books about his service.
Tests by tactical teams on prototypes of Trump's proposed wall indicate their height should stop border crossers.
Defense Secretary Jim Mattis will unveil the National Defense Strategy on Friday.
Trump went to the Pentagon to send a message that funding the military is his top priority in any deal to avoid a shutdown.
President Donald Trump is meeting Defense Secretary Jim Mattis at the Pentagon on Thursday.
Afghans recognized President Trump with a gold medal for bravery after his administration suspended aid to Pakistan.
The Russian foreign minister said the U.S. doesn't want to recognize "the reality of the emerging multipolar world."
President Trump's tweets about a key U.S. spying law threw the House into disarray, but lawmakers ended up renewing the law.
Amazon customers seem to be confusing two books that have the same title.
Trump said he sees things differently, predicting a "long period of peace," in the nation's future.