Biotech entrepreneur suspends White House campaign after disappointing Iowa caucuses.
Ramaswamy congratulates Trump on victory, pledges full endorsement for the presidency.
Earlier, Ramaswamy lauded Trump as the "best president of the 21st century."
Urges Republicans to support new leadership and elevate the "America First" agenda.
Ramaswamy addresses reporters and supporters in Des Moines after campaign suspension.
Video shows emotional supporters at the hotel, urging Ramaswamy to continue working for the people.
Ramaswamy plans to campaign for Trump in New Hampshire, rallying supporters for the ex-president.