A delegation of US lawmakers sought to reassure European allies in Brussels on Tuesday that differences over President Donald Trump’s policies were mere “family squabbles” and transatlantic ties remain strong, Reuters reported.

US Speaker of the House Nancy Pelosi cast the visit by a 50-strong delegation to Europe as proof of enduring bonds despite anger in European capitals over what is seen as Trump’s disregard for their interests.

“Like in a family, there are ups and downs,” congressman Eliot Engel, chairman of the foreign affairs committee said. “Things sometimes are bumpy, but they straighten out.”

Referring to unease in transatlantic ties, congressman Gregory Meeks remarked: “We may have a squabble but those squabbles will dissolve.”

The European Union and the United States have traditionally been the closest of allies, working together also via NATO.

Trump, however, has lambasted his European peers for not spending enough on defence, raising doubts among many in Europe about his commitment to the Western military alliance and Europe’s broader security.

Speaking in Brussels, Pelosi pointed to bipartisan support for NATO after the US House of Representatives last month approved legislation aimed at stopping Trump from withdrawing the United States from military alliance.

“I don’t think there is any difference between democrats and republicans on our relationship with NATO,” she said.