I believe the Vice President has worn this silk blouse by Chloé.
The Silk Tie-neck Blouse ($1490) is made of 100% silk in a color called ‘delicate pink.’ The piece features a back yoke, long sleeves with button cuffs, and a concealed front button placket.
As of late August, it is available at Saks ($1490), at Nordstrom ($1490), and Bergdorf ($1490).