Immigration
The popular writer and radio presenter did not hold back.
But opinion polls suggest it trails behind the cost of living and NHS in the public's list of priorities.
The prime minister has had a week of disappointing news.
"Isn't it time to put her out of her misery?"
The official statistics watchdog says there has actually been a huge increase in unresolved cases.
Presenter Fiona Bruce asked who supported the policy and no one put their hand up.
Ministers have been accused of "thrashing around" for headlines as local elections approach.
The prime minister says the bill is needed to stop asylum seekers crossing the English Channel in small boats.
Rishi Sunak is facing a backbench rebellion over his immigration crackdown.
Former PM Theresa May is among those who have concerns about the immigration bill.