The Remain MP made a further dig at the prime minister claiming she had put the country in a “difficult” position by trying to forge new trade ties with Mr Trump’s America.
Speaking after Mr Bercow told MPs he would not wish to issue an invitation to President Trump, Mr Farron backed up his comments.
Tim Farron defended John Bercow's comments against Donald Trump
I think Theresa May is perhaps the one you should point the finger at
He told BBC News: “The prime minister has put this country in a very weak and difficult position, out of probably self-inflicted desperation because of the hard Brexit choice she has made, she is now desperate for a quick deal with the United States.
“That means that she has rolled out the red carpet to Donald Trump and [leaving] the Speaker to say ‘well he will not be welcome to have the red carpet rolled out for him here in this place’.
“He would not have done this, I am certain, if the prime minister had not made that desperate offer of a state visit just the other week.”
The Lib Dem leader said Theresa May was to blame for the Speaker's comments
The Speaker’s comments were applauded by some Labour and SNP MPs in the Commons on Monday.
He told MPs that addressing the Lords and the Commons was "an earned honour" not an "automatic right”.
Mr Bercow said he was even more opposed to Mr Trump addressing Parliament after his controversial travel ban – which temporarily restricted visa to citizens from seven mainly Muslim countries.
The remarks are a break from protocol as the Speaker is seen as an impartial figure in the Commons who does not get drawn into potentially party political matters.
John Bercow said he would "strongly oppose" a speech by Donald Trump in Parliament
Mr Farron defended the intervention, suggesting Mr Bercow was “entitled to make a response” because he had been asked a question about the President’s visit by a Labour MP.
“Mr Bercow, whatever one thinks about him, has always had a very strong position when it comes to matters of equality and human rights,” the Lib Dem leader continued.
“He very much values [Parliament] as a holder of those values that most of us share in this country.
“I think he would not have even dreamt of making the comments if it wasn’t for the prime minister putting him and indeed all of us in a very difficult position.
“So I think Theresa May is perhaps the one you should point the finger at.”
May meets Trump: Historic first meeting in pictures
Fri, January 27, 2017
The two leaders will spend about an hour in face-to-face talks in the Oval Office, where President Trump has restored a bust of Winston Churchill removed by predecessor Barack Obama.
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President Trump Meets With British PM Theresa May At The White House
Mr Bercow’s comments will be seen as a huge snub to President Trump, after his predecessor Barack Obama gave a speech at Westminster Hall in 2011.
Other US politicians to address the Royal Gallery include President Reagan and President Clinton.