"The resignation of national security adviser Michael Flynn raises deep, unresolved questions about President Donald Trump's relationship with Russia and whether America's longtime adversary tried to tilt the election in his favor.
The leap from Flynn's actions to some broader conspiracy remains huge. But the lingering concerns could develop into a legal minefield for the White House, as congressional inquiries unfold and calls mount for an independent criminal probe, lawyers and scholars say.
Michael Flynn Jim Lo Scalzo / EPA Other officials from the Trump campaign or White House could potentially be swept into the scandal, which has fed suspicions of Trump's relationship with Russian President Vladimir Putin, his business ties with Russia and reports of Russian hackers' leaking information that damaged Trump's rival, Hillary Clinton.
'The problem isn't what already has happened. It's what will happen now, as the Senate investigations ramp up,' said Stan Brand, a former general counsel to the House of Representatives who has represented high-profile government officials in public corruption cases."