In a press conference, Trump confirmed that he was withholding aid for Covid-19 for states that have been particularly badly hit because he was trying to put pressure on the Democrats over mail-in voting.
He's also previously been accused of spreading misinformation about mail-in voting for the 2020 elections over the last few months – with Twitter even putting fact-checks on some of his more misleading tweets.
Trump has yet to publicly address Swift's tweets but it’s unlikely to make him very happy if a previous altercation is anything to go by.
In 2018, Taylor Swift endorsed Democrat Phil Bredesen over Republican candidate Marsha Blackburn, who she said “appalls and terrifies" her.
Trump responded at the time:
I’m sure Taylor Swift doesn’t know anything about [Blackburn]. I like Taylor’s music about 25 per cent less now, OK?