artpipi/iStockBy SOO RIN KIM, ABC News (WASHINGTON) — As lawmakers and investigators dig into the roots of the Jan. 6 Capitol insurrection, the question of who funded one of the galvanizing forces behind pro-Trump efforts to challenge election results remains shrouded in mystery. The nationwide “Stop the Steal” movement represented one of the most vocal efforts to contest the outcome of the 2020 election. The name, coined in 2016 by Donald Trump’s longtime political adviser, Roger Stone, resurfaced during the 2020 race in a new effort led by far-right activist Ali Alexander, who is now the self-proclaimed national organizer of the “Stop the Steal” movement.