In 2003, delegations comprised of 492 international dignitaries representing 60 countries made official visits to the California Senate. The countries, ranked by number of visitors, were as follows: | |||
| COUNTRY | # VISITORS | COUNTRY | # VISITORS |
| CHINA | 141 | BURKINA FASO | 2 |
| JAPAN | 68 | DENMARK | 2 |
| INDIA | 23 | IRELAND | 2 |
| CUBA | 25 | NETHERLANDS | 2 |
| RUSSIA | 19 | THAILAND | 2 |
| SOUTH AFRICA | 17 | ARGENTINA | 1 |
| MEXICO | 14 | BELGIUM | 1 |
| NORWAY | 14 | BENIN | 1 |
| GERMANY | 11 | CANADA | 1 |
| ISRAEL | 11 | CHAD | 1 |
| PHILIPPINES | 11 | CYPRUS | 1 |
| VIETNAM | 11 | EL SALVADOR | 1 |
| UZBEKISTAN | 10 | ESTONIA | 1 |
| AZERBAIJAN | 7 | FRANCE | 1 |
| UKRAINE | 7 | GUATEMALA | 1 |
| BRAZIL | 6 | ITALY | 1 |
| MACEDONIA | 6 | KAZAKHSTAN | 1 |
| TURKMENISTAN | 6 | KENYA | 1 |
| CROATIA | 5 | LITHUANIA | 1 |
| HUNGARY | 5 | LUXEMBOURG | 1 |
| KRYGYZSTAN | 5 | MALI | 1 |
| TAJIKISTAN | 5 | MAURITIUS | 1 |
| IVORY COAST | 4 | NEW ZEALAND | 1 |
| MOLDOVA | 4 | NIGER | 1 |
| SERBIA AND MONTENEGRO | 4 | PORTUGAL | 1 |
| UNITED KINGDOM | 4 | ROMANIA | 1 |
| BULGARIA | 3 | RWANDA | 1 |
| CHILE | 3 | SCOTLAND | 1 |
| SPAIN | 3 | SOUTH KOREA | 1 |
| BOLIVIA | 2 | SWITZERLAND | 1 |
The delegations studied a wide range of subjects, which are ranked below according to the number of visitors who studied them: | |||
| SUBJECT | # VISITORS | SUBJECT | # VISITORS |
| protocol/international relations | 172 | education | 29 |
| government/political/ legislative process | 120 | energy/environment | 16 |
| international trade | 69 | public safety | 5 |
| biotechnology | 41 | social/health issues | 4 |
| agriculture | 39 | fiscal | 1 |
| budget/finance | 29 | gender | 1 |
Note: As some delegations studied more than one subject, the subject area numbers will not coincide with the number of visitors.