Joseph Kennedy III is a congressman for Massachusetts and the grandson of Robert Kennedy. He delivered the Democratic party response to this year's State of the Union address and is seen by many as a possible future presidential candidate.

This week, he sat down with Washington Correspondent Brian O'Donovan.

The walls of Congressman Kennedy's office on Capitol Hill are covered with posters and flags of various sports teams from across his home state of Massachusetts. There are also dozens of photos of the congressman with a host of celebrities and world leaders. I guess when you're a Kennedy, these are the circles you move in.

Joseph Kennedy III is a 37-year-old congressman for Massachusetts and the grandson of Robert Kennedy. With a head of red hair, there's no denying his Irish roots and that's where we began.

He said he's very proud of his Irish heritage. 

"The story of President Kennedy's visit to Ireland is one that I've heard over and over again," he said.

"Around Boston, being Irish is a shared history and a shared story. The Irish diaspora still has a lot of influence in many parts of the country."

One issue currently facing some Irish people in the US is a fear of deportation amid a clampdown on undocumented migrants. 

Mr Kennedy said: "There's a sizable population of Irish and other nationalities affected by this. It's a responsibility of those of us in elected office to tell that side of the story. It's not just a Hispanic or Latino issue, but a human one."

Mr Kennedy delivered the Democratic Party's response to US President Donald Trump's State of the Union address in January. 

He says he was honoured to be asked to deliver the speech but it came as a surprise to him.

"I only got the invitation about a week beforehand. Myself and my staff were scrambling a bit to get it all together," he said.  

He said that it's been nice to hear from people who said his message resonated with them, but he has been asked a lot of questions about his very shiny lips during the address.

"When you're waiting to speak it's difficult to regulate the amount of chapstick you should use and I clearly miscalculated!"

The congressman said that the Kennedy name is something a lot of voters recognise and appreciate but he said: "If you're running for office, you have to stand on your own two feet. 

"I recognise that I deserve to be judged on the policies, ideas, visions and values that I put forward and not just what my relatives have done."

There's lots of speculation that Mr Kennedy may run for president. 

I asked him if we'll see him on the ticket in 2020, he replied: "I wouldn't hold your breath. I've a very full life right now with a two-year-old and a 10-week-old. The number one priority at the moment is trying to sleep through the night."

I asked him if he's ruling it out 100%. 

"I don't know what would happen to make it happen, so pretty darn close," he said.