President Donald Trump has criticised a service held at the Washington National Cathedral after he was called out during a sermon.

Right Rev. Mariann Edgar Budde asked Trump for “mercy”, citing feelings of fear among LGBT and immigrant communities.

Shortly after being sworn in as US President on Monday, Trump said he would make it “official policy” that there are “only two genders – male and female.”

He also vowed to end illegal immigration into the country and said millions of “criminal aliens” would be deported.

Speaking to press afterwards, Trump said he “didn’t think it was a good service”.

“They could do much better”, he added before walking away.