Vice President-elect Kamala Harris submitted her resignation from her seat in the Senate on Monday ahead of Jan. 20’s Inauguration Day. “As I resign from the Senate, I am preparing to take an oath that would have me preside over it,” Harris wrote in her resignation letter. “As senator-turned-Vice-President Walter Mondale once pointed out, the vice presidency is the only office in our government that ‘belongs to both the executive branch and the legislative branch.’ A responsibility made greater with an equal number of Democrats and Republicans in the Senate,” she added. The California Democrat said that while she will use her power as a Senate tie-breaker, she hopes that she won’t have to. Harris noted that since the founding of the United States, “Only 268 tie-breaking votes have been cast by a Vice President. I intend to work tirelessly as your Vice President, including, if necessary, fulfilling this Constitutional duty.” …