Canada’s government is to bolster its investment in border security after Donald Trump threatened to impose steep tariffs over illegal immigration and drug smuggling across the US-Canada frontier. Prime Minister Justin Trudeau met Canada’s provincial leaders to agree a united response to the US president-elect’s pledge this week to impose 25 per cent tariffs on all products from Mexico and Canada. After the meeting with Trudeau, Canada’s public safety minister Dominic LeBlanc said: “We believe that there is a circumstance where we can make additional investments to reassure Canadians that all of the measures necessary are in place and will continue to be in place”, although he declined to say how much extra money the federal government would make available. …Canada has its own fears over border security. Trump has pledged to carry out mass deportations and Canadian officials fear many could head north to avoid being caught by US immigration officials.