Republican Don Bacon became the first member of Congress to demand a new ambassador, writing "time for a new ambassador" on the X social media platform.
Bacon, a retired general and Afghanistan veteran who belongs to the moderate wing of his party, has previously criticised President Donald Trump's foreign policy.
Ambassador Tom Rose cut ties with the Speaker of Poland's lower house of parliament, Włodzimierz Czarzasty, after the Polish lawmaker refused to support a Nobel Peace Prize nomination for Trump, accusing the US president of destabilising international institutions.
Phil Gordon, a former adviser to US Vice President Kamala Harris, suggested the strong US-Polish alliance was difficult to undermine "but this ambassador seems determined to try."
He noted the incident came not long after Trump "denigrated" the service of Polish soldiers in Afghanistan.
Luis Moreno, a former US ambassador to Jamaica, said Poland should declare Rose "persona non grata."
Steven Pifer, former ambassador to Ukraine, remarked that if American diplomats stopped meeting people who wouldn't nominate Trump for a Nobel Prize, "they would have a lot of free time."
Neither the State Department nor the White House have commented on the matter.
(ał/gs)
Source: PAP