It’s an island, so you can’t walk in.
Any asylum-seeker entering by boat, gets taken to our neighbour and friend, Papua New Guinea, on terms that they can NEVER be settled in Australia. If they are recognised as a refugee, they live in PNG, where the locals don’t take no sh!t from anyone, least of all uppity foreigners seeking free handouts.
Any non-citizen needs a visa to get in.
A non-citizen can enter on a visa and then claim asylum. In that case, they cannot be deported until their asylum case is processed and decided against them.
Almost all the other migrants - who are not tourists - can get permanent residence, which they can convert to citizenship.
Most of them have a high level of English, a tertiary professional or trade qualification PLUS three years work experience in that trade or profession before they apply, and have to be young adults.
An Australian citizen can sponsor a spouse who is not qualified.
So, in short, no. Australia does not have anything like the immigration problem that the USA has with its land borders.
We still have leftists whose virtue signalling to entice illegals has resulted in hundreds and hundreds of men, women and children being drowned at sea. But they don’t givea sh!t about their deaths - too busy preening themselves in the cafes of the trendy.
For some reason the left wing seems to attract these retarded turds with the ethics and intellect of an infant.