Senator John McCain's inner circle is reportedly planning his funeral and want Vice President Mike Pence at the service - but not President Donald Trump.

Those close to the Republican Arizona senator have told the White House that their current plan is for Pence to attend the funeral, the New York Times reports.

Trump, who once blasted McCain as 'a mess' during his CPAC speech in February, is not on the list. The Times cites McCain's 'rocky relationship' with the president as the reason Trump is reportedly not invited.

McCain is battling an aggressive form of brain cancer. The 81-year-old politician was diagnosed last July, and is undergoing treatment.

In a tweet on Friday, Meghan McCain said she was headed home to Arizona to be with her family.

Those close to the Senator John McCain have reportedly told the White House that the president it not invited to McCain's eventual funeral

A report claims that Vice President Mike Pence (left) was invited, but not President Trump (right), who McCain has a very contentious relationship with

McCain, pictured on Capitol Hill in November 2017, was diagnosed with an aggressive form of brain cancer last July

'Thank you all again for your prayers, patience, understanding and compassion during this time. It means the world to me and my entire family,' she posted, adding that she will be back on The View, which she co-hosts, on Tuesday.

Last month, the senator was hospitalized with an intestinal infection. Meghan McCain, who flew home to be by his side, shared a photo on Instagram of them together writing that he was in 'stable condition.'

'He continues to inspire me everyday with his intense grit and determination,' she posted. 'Thank you to the doctors at Mayo Clinic in Phoenix and to everyone who is praying for him.'

'He continues to inspire me everyday with his intense grit and determination,' daughter Meghan McCain wrote last month after the senator was hospitalized with an infection

McCain and Trump have had a very contentious relationship. Trump was criticized when he infamously mocked McCain's status as hero in the Vietnam War during a 2015 Family Leadership Summit, saying McCain was only a war hero 'because he was captured'.

'I like people who weren't captured,' he said.

Trump also got the CPAC crowd to boo McCain in February when he mentioned the senator voting against his senate colleagues with a thumbs down when they tried to repeal the Affordable Care Act.

'Remember, one person walked into a room, where he was supposed to go this way, and he said he was going this way, and he walked in and he went this way and everyone said, "What happened? What was that all about?" Boy, oh, boy,' Trump said avoiding the mention of McCain's name.

McCain tweeted Friday that she was taking a short leave from The View to head home to Arizona to be with her family. She's pictured above with her father, John McCain

'Who was that?' he continued. 'I don't know. I don't want to be controversial, so I won't use his name. Okay. What a mess.'

Trump made the comments after he had called Meghan McCain to say he would not mock her ill father anymore.

According to the Times, McCain is 'still in the fight' despite his ailing health. The politician is still handling conference calls from his Arizona ranch and visiting DC when he came.

The outlet reports that McCain's close friends, including former Vice President Joe Biden, have been spending time with McCain at his home.

'I wanted to let him know how much I love him and how much he mattes to me and how much I admire his integrity and his courage,' Biden told the Times after his hours-long visit. 'I wanted to see my friend.'

The funeral will be held at the National Cathedral in Washington DC, the report claims.