In a series of tweets beginning early Monday morning, conservative author Michael Reagan renounced his support for Donald Trump’s candidacy and said that neither Nancy nor Ronald Reagan would have supported the Republican nominee.

Reagan, the son of the former President and his first wife, Jane Wyman, has recently criticized Trump in his columns. On Thursday, he wrote that Trump “doesn’t know when it’s time to just shut up” in response to the GOP nominee’s targeting of former Miss Universe Alicia Machado and his clumsy handling of a birtherism question at the first presidential debate.

Reagan’s tweets began as a response to Trump making the bizarre claim Saturday at a campaign rally in Manheim, Pennsylvania that Hillary Clinton had been unfaithful in her marriage.

Read Reagan’s tweets below:

No way do I or would my father support this garbage.Trump on Clinton: ‘I don’t even think she’s loyal to Bill’ https://t.co/zTBMcB3wUi — Michael Reagan (@ReaganWorld) October 3, 2016

If this is where he is going I cannot follow him..Trump on Clinton: ‘I don’t even think she’s loyal to Bill’ https://t.co/zTBMcB3wUi — Michael Reagan (@ReaganWorld) October 3, 2016

I can hear my father saying I didnt leave the Party the Party left me.’I don’t even think she’s loyal to Bill’ https://t.co/zTBMcB3wUi — Michael Reagan (@ReaganWorld) October 3, 2016

If the RNC supports this I cant suppoet the RNC.Trump on Clinton: ‘I don’t even think she’s loyal to Bill’ https://t.co/zTBMcB3wUi — Michael Reagan (@ReaganWorld) October 3, 2016

Its time for Priebus to take a stand..Trump on Clinton: ‘I don’t even think she’s loyal to Bill’ https://t.co/zTBMcB3wUi — Michael Reagan (@ReaganWorld) October 3, 2016

Getting a Point with Trump where I just don’t give a shit… https://t.co/LDexHH8KIM — Michael Reagan (@ReaganWorld) October 3, 2016

There is no reason to infer she is cheating on Bill. https://t.co/FXZd6aNQOg — Michael Reagan (@ReaganWorld) October 3, 2016

Jane Wyman was my mother but I can tell u that Nancy would vote for Hillary and was appalled to hear people say he reminds them of RR. https://t.co/DKsikyfuWs — Michael Reagan (@ReaganWorld) October 3, 2016

The direction he is headed will never win him the White House…No FILTER No Potus https://t.co/Ctp6mXNtvg — Michael Reagan (@ReaganWorld) October 3, 2016

I am glad my father is not alive to watch this…He would tell us to vote the down ticket to stop Hillary.. https://t.co/ruSKUGaEZ8 — Michael Reagan (@ReaganWorld) October 3, 2016

I am embarrassed by Trump and the applause he receives when infering she cheats on Bill..Not the Party of Reagan..Someone has to stand up https://t.co/ATYzc9HPj5 — Michael Reagan (@ReaganWorld) October 3, 2016