Hillary Clinton's UFO investigation plans unlikely to achieve liftoff, experts say

The Democratic frontrunner has said she would look into alleged spottings as president - but there may not be much to investigate

Hillary Clinton is entering uncharted territory in this presidential election.

If she wins the White House, she would become the first female president, the first spouse of a former president to hold the office herself, and, possibly, the first president to have devoted time on the campaign trail to discussing UFOs.