Friedrich Merz's unprecedented first-round failure in the vote to make him German chancellor on Tuesday gave a boost to the far-right AfD, which just days ago was reeling from being officially labelled an extremist threat to democracy.

New Chancellor faces economic stall as the U.S. questions security alliance and stirs a trade war.

While already planned, the trip comes only a day after Merz was elected chancellor by parliament on the second round of voting. His unprecedented failure to succeed on the first round underscored disunity in the coalition of his conservatives and Social Democrats.