Hunter Biden fought back-and-forth with GOP Congressman Matt Gaetz during the embattled first son’s closed-door deposition before the House Oversight Committee this week, RadarOnline.com has learned. In the latest development to come weeks after President Joe Biden’s son agreed to testify in private in front of the GOP-led committee, Hunter and Gaetz reportedly clashed over Hunter’s overseas business activities. Also shocking are reports that the first son and Gaetz argued about Hunter’s struggle with drug addiction during Hunter’s lengthy closed-door deposition before the House committee on W…