Biden or Trump, no trade deal for Britain if Ireland peace pact violated

U.S. presidential candidate Joe Biden's recent warning that Britain must honor Northern Ireland's 1998 peace agreement to secure a U.S. trade deal adds new complexity to already tough trade talks between the United States and the U.K.

"We can't allow the Good Friday Agreement that brought peace to Northern Ireland to become a casualty of Brexit," Biden wrote on Twitter on Wednesday, referring to the deal that ended three decades of sectarian violence in Northern Ireland and created a shared regional government.

Biden was echoing Democrat House Speaker Nancy Pelosi's warning last week that any move by Britain to erect physical customs