Cracks are growing in the GOP defense of Trump's long-shot effort to overturn the 2020 election outcome.<br />Many top Republicans are contending that Joe Biden should immediately get national security briefings.<br />Some are calling for the official transition process to begin, reports CNN.<br />Others are acknowledging that Trump stands little chance at reversing results clearly showing he lost.<br />Even still, Trump has no plans to concede that have been made public.