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1009
Simple way to repeat a string
stackoverflow.com

149
Strip Non-Alphanumeric Characters from an NSString
stackoverflow.com

91
How to get matches in iOS using regular expression?
stackoverflow.com

86
Where's the difference between setObject:forKey: and setValue:forKey: in NSMutableDictionary?
stackoverflow.com

74
Canadian citizen, TN worker, commute daily from Canada: am I a US person for tax purposes?
money.stackexchange.com

51
How to return nil in swift in a custom initializer?
stackoverflow.com

49
Can I use my Chinese passport to enter China after I acquired another citizenship?
travel.stackexchange.com

46
Who to contact about ESTA refusal for previously overstaying partner of US citizen?
travel.stackexchange.com

46
What to do when visa admission expires during lockdown?
travel.stackexchange.com

43
How to I pass @selector as a parameter?
stackoverflow.com

43
How can I check if I am banned from travelling to the US?
travel.stackexchange.com

42
Could my employer match contribution have caused me to have an excess 401K contribution?
money.stackexchange.com

42
What would be the fastest method to test for primality in Java?
stackoverflow.com

39
I’m waiting for my US passport (am a dual citizen). My father is ill and I booked a flight to see him - can I travel on my other passport?
travel.stackexchange.com

38
How is it that Ted Cruz can run for the U.S. presidency seeing as he was born in Calgary?
politics.stackexchange.com

36
Can I change planes to transit via the USA, when I am not allowed to enter it for non-essential reasons due to covid restrictions?
travel.stackexchange.com

35
What is the difference between instanceof and Class.isAssignableFrom(...)?
stackoverflow.com

35
Is the ban on applying for a US visa after marriage fraud a lifetime ban or 10 years?
travel.stackexchange.com

32
UIView Autoresizing Resources
stackoverflow.com

31
What new data caused Biden to be declared winner by the news?
politics.stackexchange.com

31
Can I be admitted to the US after a two-year overstay 21 years ago?
travel.stackexchange.com

30
does NSThread create autoreleasepool automatically now?
stackoverflow.com

30
Will Canadian citizens be denied entry to Canada during COVID-19 border closure?
travel.stackexchange.com

30
USA Tourist Visa Extension due to Covid-19 also Airlift for Indian nationals in the US details
travel.stackexchange.com

28
Canadian overstayed in the US for 14 years. Can I leave to Canada and return back to the US?
travel.stackexchange.com

26
Can my mom travel to the US with a green card if it’s been over a year since her last entry due to COVID?
expatriates.stackexchange.com

26
Is the "Visa Waiver Program Improvement and Terrorist Travel Prevention Act" already valid?
travel.stackexchange.com

25
Foreign driver gets a ticket in my car
travel.stackexchange.com

25
Can my mom travel to the US with a green card if it’s been over a year since her last entry due to COVID?
travel.stackexchange.com

25
Overstayed my US visa for over 9 years, never got deported, can I return as a tourist?
travel.stackexchange.com

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