Press Secretary Karine Jean-Pierre sparred with reporters during a seemingly tense press briefing Monday as they grilled her over reports of a Parkinson’s disease expert’s numerous visits to The White House in the past year. Jean-Pierre grew visibly flustered while continuing to field questions on President Joe Biden’s health and his mental fitness to serve a second term, following last month’s debate fiasco now coupled with reports neurologist Dr. Kevin Cannard visited The White House eight times in eight months. Citing visitor logs, The New York Times reported Cannard, an expert in Parkinson…