Varadkar has said he does not expect a breakthrough in the impasse over how the Irish border will be handled once Britain leaves the European Union.Johnson plans to press a rebellious Parliament later Monday to back his plan for an early election, but opposition parties have said they will vote the measure down.
A new bill that seeks to force Johnson to seek a Brexit delay before the Oct. 31 deadline is set to become law on Monday.
Johnson has said he will not seek a delay.