Crossing The Border by Kevin W Bates

In 2057 amid rampant violence the U.S. is on the verge of war with the Lost Land.
Determined to destroy the Lost Land, U.S. President Amos Carpenter closes the Lost Land border and hatches a secret plot to nuke the Landers into submission. But Peter Gillen and Rose Horne are determined to reach the Lost Land. With official border crossings sealed, their only hope is an overland trek through the Rocky Mountains where roving gangs hunt “crossers” like them for sport. When private BT O’Connell, Rose’s lost love, is sent to the Lost Land as part of an invading force Rose, BT and Peter are caught up in the President’s plot and alone stand between the Lost Land and nuclear Armageddon.