Columbia University President Minouche Shafik prepares to testify before the House Education and Workforce Committee during a hearing on Columbia University’s response to antisemitism in Washington, DC, on April 17. Francis Chung/POLITICO/AP/FileAfter two weeks of tumult and calls for her resignation, the president of Columbia University says she is “committed” and will “rebuild the community on our campus.”The group of protesters who occupied Hamilton Hall on Columbia University’s campus, “crossed a new line,” President Minouche Shafik said in a video message released on X…