A friend told me that if I received any help at all with ACA and have bills they can put liens on my house and take everything I own. considering insurance is mandatory now. How can that be true?
The only way for the IRS to collect the fee for not having health insurance, if you choose not to pay it, is for them to withhold the money from the Federal Income Tax Refund you would get back from the IRS after filing your income tax return. The IRS cannot enforce the Individual Shared Responsibility provision with jail time, liens, or any other typical methods of collection.
You are encouraged to get assistance through the Health Insurance Marketplace based on your income. Just make sure to report income changes and life changes throughout the year, if your income does change you could end up getting more cost assistance or owing money back on your taxes.
If you don't get covered, and make enough money, you will owe a fee if you don't get coverage. May as well take advantage of the assistance you are entitled to.
Update April 15, 2015: We realize you are probably talking about the old Medicaid estate recovery law (misinformation about it was used to drum up hate against the ACA at some point in 2014).
While ObamaCare won't put a lien on your house long-term care for Medicaid can. (Medicaid is where Medicare patients who need extended long-term care get their coverage). They wouldn't take "everything" but could in some instances try to recoup the cost of the long-term care. Learn more about the facts and myths of Medicaid estate recovery here. It's not a scary thing for the most part and doesn't affect those who get Medicaid coverage due to Medicaid expansion under the ACA (unless they end up institutionalized and needing lots of expensive long term care.)