Attorney General Loretta Lynch on Tuesday said that she and the Department of Justice are committed to gay rights.

“I am committed – as is this department – to ensuring equal dignity and equal treatment for all members of society, regardless of sexual orientation,” she said in a statement.

Lynch released the statement on the same day that the Supreme Court heard arguments in a case challenging bans on gay marriage in Ohio, Tennessee, Kentucky and Michigan.

(Related: Supreme Court justices appear divided on gay marriage.)

“As we argue today before the Supreme Court, same-sex couples deserve that treatment now,” she added.

On Monday, The 55-year-old Lynch was sworn in as the nation's 83rd attorney general and the first African-American woman to hold the position. She replaces Eric Holder, who strongly supported gay rights.