CNN anchor Kaitlan Collins sparred with Republican Sen. Tom Cotton of Arkansas during a heated discussion Tuesday night over a GOP-led block of a bill that would protect in vitro fertilization. Republicans in the Senate on Tuesday blocked Democrats from advancing legislation that would provide federal protections and insurance coverage for IVF treatments. Republicans characterized the legislation as a politically motivated stunt. The discussion between the CNN anchor and the lawmaker immediately became contentious when Cotton attempted to “correct” Collins over her lead-in to the segment. Want…