I was rejected and told to leave Canada - can I enter again? [closed]

I lived in Canada from 2007 until 2011. I applied for refuge and was rejected. I appealed, this was also rejected again and I was told to leave Canada. So I left the country.

Now it's 6 years since I left Canada, and right now I'm in the US, trying to enter Canada from the border and apply for refuge again.

My questions are:

Is it dangerous to come to Canada again this way?
Will they return me to the US?
I have serious problems in my country; can I come and apply for a new case with the evidence?
If I enter Canada, I know they will find my old case when I make fingerprints; does this prevent me from entering?
If they allow me, will I get financial support like I had before?

edited:

When I came to Canada originally I came on student visa. I couldn't go back to Saudi Arabia because I would be put in jail so I filed for asylum. Canada didn't accept my case. I made an appeal but it also was rejected and I was told to leave back to my country.

I went back and of course I was put in jail. I got out and lived normally without any problem for six years. Suddenly I was called by the government for a DNA test because my father wasn't my genetic father and also my mother was not my genetic mother.

My original mom was Eritrean but she couldn't get an ID for me so my father put me as his son in the paperwork and his wife as my mom so the government of Saudi Arabia will give me a national ID. My genetic mother is not listed in my ID paperwork.

A problem happened between my father and his wife so she went to the police station and reported that i wasn't her son and wasn't also her husband's son and that my real mother is an Eritrean.

The Government of Saudi Arabia immediately stopped my national ID services. They called for an investigation and forced me to take a DNA test. I said OK but left the country. I know if they find out the truth they will take my ID and send me back to Eritrea. People are fleeing Eritrea because life is not safe there.

This is my story. I'm sorry that it's long but this is the truth and I have paper from the government of Saudi Arabia that I'm wanted as evidence.

Now I'm in USA legal on a tourist visa.

Will this allow me to enter?