BERLIN — Jens Spahn, a senior member of Germany’s ruling conservatives, ​resigned on Saturday after welcoming a baby ‌born to a surrogate mother in the United States, a move at odds with his own party’s opposition to ​surrogacy.Spahn, 46, the parliamentary leader of Chancellor Friedrich ⁠Merz’s Christian Democrat party and its sister Christian Social ​Union (CDU/CSU), drew heavy criticism after news emerged that ​he had become a parent with his husband through a surrogate mother.Surrogacy is prohibited in Germany, although it ​is not illegal to bring up a ​child born of a surrogate mother outside Germany.“Over the ‌past few days, I have come to realise that my personal happiness — starting a family with my husband and becoming a father — is incompatible with my ​political office,” ​Spahn wrote ⁠in the resignation letter.The CDU voted to uphold the ban on surrogacy ​inside Germany at its party conference ​in ⁠February, and the news about Spahn’s move to use a surrogate in the U.S. prompted numerous ⁠calls ​from within the party for Spahn to ​step down.