WASHINGTON: Republican presidential candidate Donald Trump on Wednesday (Jul 24) attacked his new Democratic rival Kamala Harris as the "ultra-liberal driving force" who should be held responsible for the Biden administration’s policies on immigration.

"As border czar, Kamala threw open our borders that allowed 20 million illegal aliens to stampede into our country from all over the world," Trump said at a North Carolina rally, his first since President Joe Biden bowed out of the race at the weekend.