what is time limit to enter in US after visa stamping done

hi All

  1. what is time limit to enter in US after visa stamping done
    for H1 person and for H4 person

  2. which first time medical insuarnce is cheaper in USA for full famliy also cover most of all deseses

Guide me guys

  1. You can enter anytime during visa and petition validity period. Whenever you enter, make sure you have recently dated employment documents

  2. You should ask your employer what insurance plans they offer. Getting insurance yourself is expensive. That’s why employers offer insurance plans where they share the cost and can get better rates and coverage.