[5] To the extent, therefore, that the application to re-open made on 19 July 2001 was based on the ground that, in imposing sentence on 9 April 2001, the learned judge had wrongly failed or refused to take into account the impact that that sentence would, if unaltered, have on the appellant's prospects of retaining his visa, it was in my opinion misconceived. Re-opening and reducing the sentence imposed on 9 April 2001 would not have detracted from the Minister's power to exercise his discretion under s 501(2) of the Migration Act. But, in any event, I consider that the process of sentencing should not seek to anticipate the action that some other authority or tribunal, lawfully acting within the limits of a proper discretion, may take in future, by so adjusting the sentence as to defeat, avoid or circumvent that result. See, although in a different sentencing context, R v Booth [2001] 1 Qd R 393, 400, where it was said to be wrong to attempt to circumvent a specific legislative direction by deliberately imposing a lesser sentence in order to avert it. More specifically, in R v Chi Sun Tsui (1985) 1 NSWLR 308, 311, Street CJ said that "the prospect of deportation is not a relevant matter for consideration by a sentencing judge in that it is the product of an entirely separate legislative policy area of the regulation of society". Those remarks of the learned Chief Justice were cited without apparent disapproval in R v Shrestha [1991] HCA 26; (1991) 173 CLR 48, 58.