Will joe Biden lower my taxes ?

No way.  Biden will increase EVERYTHING.  I recently saw an article and I do believe your taxes will go from 20% up to 28%.

Yes, as you don't make enough to owe the US government anything. 

lol your funny david , lol lower tax when he wants to tax you more ..

No, he will raise your salary to $15 and you might start having to pay tax.

Can't lower them below zero, which is where you are.

You will always owe Social security and medicare taxes on those wages but will get them back as retirement income.

Unless you have other sources of taxable income, the answer is no.  Your tax is already zero.  

NOT A PRAYER. If you are extremely lucky, his administration won't drastically increase your taxes.

Note: If your gross pay is $12.15/hr, 18 hours per week for 52 weeks a year comes to LESS than the $12,550 for the filing status of Single. That means you already don't pay Federal income tax.

No, I'm afraid not. Dems are famous for raising taxes to fund their special interests.

How could he lower your federal income tax?   You already pay zero.

BTW, Congress is the legislative branch of federal government.