It is only US that opens its doors to whole world and people from whole world immigrate to this land. China is a closed country. Always to be suspected. We know about US the good and the bad. We know nothing about China. Even chinese people have no control over their gov. THAT IS MOST DANGEROUS. THEIR GOVT IS NVER CONCERNED ABOUT PEOPLE PROTESTS. JUST ONE MAD MAN IN COMMUNIST GOVT CAN START INDIAN INVASION.