Reacting on micro-blogging site, Trump wrote, “Welcome to the race, Sleepy Joe. I only hope you have the intelligence, long in doubt, to wage a successful primary campaign.
“It will be nasty – you will be dealing with people who truly have some very sick & demented ideas. But if you make it, I will see you at the Starting Gate!
Biden on Thursday formally joined the crowded Democratic presidential contest, betting that his working-class appeal and ties to Barack Obama‘s presidency will help him overcome questions about his place in today’s increasingly liberal Democratic Party.