Taoiseach Leo Varadkar's St Patrick's Day visit to the White House to meet US President Donald Trump could be at risk if there is fresh Brexit chaos while he's in the United States.
Ministers have been put on notice to cut their trips short if they need to return home to attend a special Cabinet meeting or to help special Brexit legislation get over the line in Leinster House.
Mr Varadkar said his visit to Washington DC and Chicago was "quite a short trip" but acknowledged contingency plans were in place to recall ministers if necessary.
"I think it is actually an important time to go to Washington," he said. He added that Ireland needed to make its case to US politicians about Brexit.
Tánaiste Simon Coveney said he believed it was "unlikely" that Mr Varadkar's meeting with Mr Trump would be affected, but said: "You can't rule anything out with Brexit. That's the truth."