British Prime Minister Theresa May in an interview that aired Sunday dodged a question about President Trump's suggestion that her country needs a tougher travel ban.

During an interview on ABC's "This Week," May was asked about Trump's tweet calling for a bigger, tougher travel ban in the wake of a London subway attack and was pressed on whether she would reconsider it.

"I think what is important is that we're able to have the powers to look into people, to identify people who may be wanting to cause us harm and are plotting to cause us harm," May said during the interview.

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"And to be able to take the necessary action when people do cause us harm."

Trump on Friday advocated for a "larger, tougher and more specific" travel ban following a bomb explosion in London's subway system.

In a string of tweets, Trump called the bombing an attack "by a loser terrorist" and suggested British authorities did not do enough to prevent it.

"The travel ban into the United States should be far larger, tougher and more specific-but stupidly, that would not be politically correct!" Trump said.

May said on Friday that Trump shouldn't speculate on the investigation into the attack in London.

During the ABC interview, she reiterated that she doesn't think it's helpful for anyone to speculate on the ongoing investigation.

"The police and the security services are doing the work necessary to discover the full circumstances of this cowardly attack that's taken place, and to identify all those who are responsible," she said.

May was also pressed about her relationship with Trump and how the two get along.

"I do get on with him," May said.

"And of course, as you know, President Trump actually has an affection for the United Kingdom."

She said she and Trump work very well together.

"The U.K. and the U.S. have always had a special relationship and worked well together," May said.