Vice President Joseph R. Biden Jr. reassured the Baltic states Tuesday that the United States still supported them despite what a certain presidential candidate might have said, Reuters reported.

Biden’s comments, made during a trip to Latvia, came in light of recent remarks from Republican presidential candidate Donald Trump who said the U.S. might not uphold its commitments to defend NATO allies if the countries did not pay up.

“The fact that you occasionally hear something from a presidential candidate in the other party,” was “nothing that should be taken seriously,” Biden said.

[Biden: Trump ‘Not Qualified to Know’ Nuclear Codes]

The Baltic states comprise the former Soviet republics of Latvia, Estonia and Lithuania. The three countries, which joined NATO in 2004, remain nervous about potential Russian expansion efforts in the region.

Biden made a similar pledge when campaigning with Hillary Clinton in Pennsylvania last week.

“There is continued overwhelming bipartisan commitment in the United States of America in both political parties to maintain our commitment to NATO,” Biden said.