Tenney compared Biden to a wax figure in Madame Tussauds.
“He comes out, he is turned on, and he sets out the theses that his shadow government presents to him, the staff behind him,” she said.
According to congresswoman, Biden is no longer able to be president.
She also urged the American leader to take a cognitive test to prove his capacity.
Earlier, Fox News columnist Andy Pazder advised the Republican Party to use the slogan "Stop the fool" in relation to Biden's policies in the upcoming US congressional elections.
The Washington Post columnist Megan McArdle said that the change in Biden's fortunes over the past ten years is very noticeable, his behavior in public casts doubt on the possibility of re-election.