Should I buy for all 4months? or renew everymonth

[Nanban]

Hi, can anyone answer th following Qs.
1. Should I buy the insurance for the entire period of stay or buy one month and renew. (advantages/disadvantages like renewal fee etc)
2. Should the visitor have to show the insurance paper at the SFO immi. officer?
3. Inbound usa Get quote page, when I put the start date - 1-june and
arrival date = 2-jun , it gives an error for me.
should i have to put 1-jun as arrival date?

Please help.
Thanks,Nanban

[Murali]

1. If her stay of 4 months is sure buy 4 months or buy for say 3 months and renew again for one months, its your choice.
2. No, insurance papers are not required at POE.
3. keep the start date and arrival date same.

[Nanban]

Thanks for the quick reply. Regards Nanban