The coastguard has said it is "highly unlikely" a man, who was swept into the sea in gale-force winds has survived.
Stuart Atkinson, watch manager at Crosby Coastguard station, said the strong, westerly gale-force winds made the search operation difficult.
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Greater Manchester Police said "inquiries are ongoing to fully understand the circumstances of the incident."
The US president enjoyed rousing support for his political agenda as a formerly hostile audience cheered his plans in office to the rafters.
The former leader said the party needed to learn lessons after his successor Paul Nuttall failed to unseat Labour in a hard-fought campaign.