Hillary Clinton is a "progressive champion," said Chance Mitchell, chief executive of the National Gay & Lesbian Chamber of Commerce. (Melina Mara/The Washington Post)

Democratic nominee Hillary Clinton on Friday picked up the endorsement of the National Gay & Lesbian Chamber of Commerce, a group that had not previously endorsed a presidential candidate in its nearly 15-year history.

In a statement, Chance Mitchell, the organization’s co-founder and chief executive, said the community had “come too far to lose our seat at the table” and called Clinton “the progressive champion our businesses and our families need to thrive.”

Republican nominee Donald Trump has pledged to be an advocate for gay Americans. After the June massacre at a gay nightclub in Orlando, the businessman said he would do “everything in my power to protect our LGBTQ citizens from the violence and oppression of a hateful foreign ideology,” suggesting that he was stronger than Clinton in this regard.

In a statement Friday, Clinton said she was proud to stand with the organization that endorsed her, which says it represents 1.4 million LGBT businesses nationwide.

Clinton also said Trump would appoint federal judges hostile to same-sex marriage, and she took aim at Trump’s running mate, Indiana Gov. Mike Pence, for signing “a law that opened the door for Indiana businesses to discriminate against LGBT people.”

Clinton said anti-gay laws have proved bad for businesses, citing House Bill 2 in North Carolina. Following the passage of the legislation, which among other things restricted the use of bathrooms by transgender people, many businesses boycotted the state.