He has one of the most famous surnames in US history.

Now US Representative Joe Kennedy III has stepped into the national spotlight as he delivered the traditional rebuttal to the president’s State of the Union.

Although well known in Massachusetts political circles, this was the first time Mr Kennedy came to “prime time”.

In a speech that had several jabs at the president, he said: “Bullies never win.” And in Spanish, he told childhood immigrants who fear deportation because Obama-era protections may soon expire: “You are part of our story.”