new york silicon valley heavyweight peter thiel give 1.25 million first donation support donald trump campaign endorse u.s. republican presidential candidate early year spokesman investor say sunday donation make combination political action committee donations money directly campaign spokesman say far billionaire thiel prominent supporter trump country technology hub new york time first report news thiel donation co-founder paypal early investor facebook inc sit company board directors thiel offer full endorsement trump speak republic national convention july thiel make donations campaign trump opponent nov. election democratic candidate hillary clinton spokesman say tech investor thiel donate 1.25 million trump campaign