Rte 29

[scooke]

1a trumps typically ambiguous response,perhaps, to immigrants rights to view? (4,4,3,4)?i??,???m,???,b?o?
21a shucks. .. (4)??d?
19d between this and that comes the alternative (6,3)??t?e,?o?
11a a port of call down under for the naturalist (6)??r???

[Flonska]

11a Darwin

[cupid04]

11a] Darwin

[Flonska]

21a Pods

https://en.oxforddictionaries.com/definition/shuck

[kettledrum]

Either or

[Captain2]

... so (6,2) then? ;))

[cupid04]

either way

[Captain2]

That works Cupes

[gangesboy]

1 give them the boot

[kettledrum]

19d Although OP has given (6,3) there are only 8 spaces given, & 'either or' fits the letters already found.

[frances1958]

Though 28a was Out of print which doesn't fit in with 19d being either way is one of them incorrect.

[frances1958]

Cheers