How Trump's 2020 Campaign May Differ From 2016

The transcript discusses Brad Parscale's role in Trump's reelection campaign, highlighting his efforts to influence tech companies like Facebook and Twitter, which he accuses of bias. It also covers the pressure from Republicans to sway these companies and Parscale's relationship with Trump. Despite not being contacted by Mueller, Parscale is preparing for the campaign under new, stricter rules, partly due to efforts to combat fake news.

What does the speaker imply about Mueller's investigation and Parscale's involvement?

In what ways have tech companies changed since the last election, according to the text?