SEPARATED non-US spouse
I'll be filing taxes for the first time this April as I just moved to the US. I am married back home though we are not together for years, and they are not US citizen or resident.
How does the IRS treat this? If I am sending money back home to take care of my teenager can I claim Head of Household? I understand that filing 'married separately' will reduce my credits and deductions relative even to filing as 'single'.
Would my ex be subject to US taxes even though they are not here?