Former U.S. Ambassador to the United Nations Nikki Haley dismissed criticism over her support for former President Donald Trump, arguing she is supporting “substance” over “style” in this election.

Former Wyoming Republican Rep. Liz Cheney, who recently endorsed Vice President Kamala Harris’s bid for the White House, said on Sunday that Republicans like Haley who are supporting Trump are abandoning the Constitution and that she could not understand Haley’s decision to support Trump “in any kind of principled way.” In response, Haley said she respected Cheney’s decision to support Harris but that Cheney could not say that deciding to support Trump was “unprincipled.”